• 114 questions

Human Body Systems Worksheet

Say which system an organ belongs to, which system does a job, and which two systems are behind an everyday action, on screen or on paper.

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Which organ system is the spleen part of?

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Write-in worksheet: name the system, 33 rows made to print

Human body systems worksheet: name the system

Name ______________________ Date ____________

The eleven systems: integumentary, skeletal, muscular, nervous, endocrine, cardiovascular, lymphatic, respiratory, digestive, urinary, reproductive. Each one is used twice in Part A and once in Part B.

Part A: which system does the organ belong to?

  • 1. Skin System: ______________________________
  • 2. Femur (thigh bone) System: ______________________________
  • 3. Biceps brachii System: ______________________________
  • 4. Brain System: ______________________________
  • 5. Thyroid gland System: ______________________________
  • 6. Heart System: ______________________________
  • 7. Spleen System: ______________________________
  • 8. Lungs System: ______________________________
  • 9. Stomach System: ______________________________
  • 10. Kidneys System: ______________________________
  • 11. Uterus System: ______________________________
  • 12. Nails System: ______________________________
  • 13. Ribs System: ______________________________
  • 14. Tendons System: ______________________________
  • 15. Spinal cord System: ______________________________
  • 16. Adrenal glands System: ______________________________
  • 17. Veins System: ______________________________
  • 18. Tonsils System: ______________________________
  • 19. Trachea (windpipe) System: ______________________________
  • 20. Liver System: ______________________________
  • 21. Urinary bladder System: ______________________________
  • 22. Ovaries System: ______________________________

Part B: which system does the job?

  • 23. The system that breaks food down and absorbs its nutrients System: ______________________________
  • 24. The system that detects and processes sensory information, then activates the body's responses System: ______________________________
  • 25. The system that produces gametes, the egg cells and sperm cells System: ______________________________
  • 26. The system that encloses the body's internal structures and holds many of its sensory receptors System: ______________________________
  • 27. The system that collects fluid that has leaked out of the blood capillaries and returns it to the blood System: ______________________________
  • 28. The system that supports the body and protects internal organs such as the brain and the lungs System: ______________________________
  • 29. The system that filters waste out of the blood and removes it as urine System: ______________________________
  • 30. The system that sends its messages as hormones carried in the blood System: ______________________________
  • 31. The system that removes carbon dioxide from the body and delivers oxygen to the blood System: ______________________________
  • 32. The system that moves the body by contracting and pulling on bones System: ______________________________
  • 33. The system that delivers oxygen and nutrients to every tissue of the body System: ______________________________

Source: OpenStax Anatomy and Physiology 2e, https://openstax.org/books/anatomy-and-physiology-2e, 31 sections in chapters 1, 4, 5, 6, 8, 9, 10, 11, 17, 20, 21, 22, 23, 25 and 27, read on 2026-09-19. Each question names its own section. Facts checked there; all wording is own work. Checked September 19, 2026.

Write-in worksheet: systems working together 14 lines, made to print

Body system interactions worksheet: which two systems?

Name ______________________ Date ____________

No organ system works alone. Read what happens, then write the two systems that are working together.

Part A: name the two systems

  • 1. You bend your elbow: a muscle shortens and pulls a forearm bone toward the shoulder. Systems: ____________________ and ____________________
  • 2. Oxygen crosses from the air sacs of the lungs into the blood, which carries it to the tissues. Systems: ____________________ and ____________________
  • 3. Nutrients absorbed through the wall of the small intestine are carried away in the blood. Systems: ____________________ and ____________________
  • 4. Blood flows into the kidneys, which filter waste out of it. Systems: ____________________ and ____________________
  • 5. Fluid leaks out of the blood capillaries into the tissues. Another system collects it and returns it to the bloodstream. Systems: ____________________ and ____________________
  • 6. A signal travels down a motor neuron and a skeletal muscle contracts. Systems: ____________________ and ____________________
  • 7. The diaphragm, a dome-shaped muscle under the lungs, contracts and air flows into the lungs. Systems: ____________________ and ____________________
  • 8. A gland releases a hormone, and the blood carries it to target cells far away. Systems: ____________________ and ____________________
  • 9. Skin in sunlight makes vitamin D, which the body needs to absorb calcium for healthy bones. Systems: ____________________ and ____________________
  • 10. An ant walks across your arm. Receptors in the skin pick it up and send the news to the brain. Systems: ____________________ and ____________________
  • 11. Air and food both pass through the pharynx before they go separate ways. Systems: ____________________ and ____________________
  • 12. The bones of the skull completely surround the brain. Systems: ____________________ and ____________________

Part B: answer in a sentence or two

  • 13. The pancreas belongs to two systems. Name them and say what the pancreas does for each.
  • 14. Pick any sport or activity. Name three systems it uses and say what each one does.

Source: OpenStax Anatomy and Physiology 2e, https://openstax.org/books/anatomy-and-physiology-2e, 31 sections in chapters 1, 4, 5, 6, 8, 9, 10, 11, 17, 20, 21, 22, 23, 25 and 27, read on 2026-09-19. Each question names its own section. Facts checked there; all wording is own work. Checked September 19, 2026.

Reference sheet: the 11 systems, organs and jobs made to print

The 11 organ systems: main organs and main jobs

Most organs help more than one system. The pancreas, the ovaries and the testes appear twice here because each does two kinds of work, and the pharynx carries food as well as air.

System, organs, jobs

  • Integumentary system Organs: Skin, hair, nails, sweat glands, oil glands. Jobs: Encloses the body, holds many sensory receptors, cools the body with sweat, makes vitamin D in sunlight.
  • Skeletal system Organs: Bones, cartilage, joints. Jobs: Supports the body, protects soft organs, stores calcium, makes blood cells in red marrow, works with muscles to move.
  • Muscular system Organs: Skeletal muscles and their tendons. Jobs: Moves the body by pulling on bones, gives off heat that helps keep the body warm.
  • Nervous system Organs: Brain, spinal cord, nerves. Jobs: Detects and processes sensory information, sends fast signals, activates responses.
  • Endocrine system Organs: Pituitary, pineal, thyroid, parathyroid and adrenal glands, pancreas, ovaries, testes. Jobs: Secretes hormones that travel in the blood and regulate body processes.
  • Cardiovascular system Organs: Heart, arteries, veins, capillaries. Jobs: Delivers oxygen and nutrients to the tissues, helps even out body temperature.
  • Lymphatic system Organs: Lymphatic vessels, lymph nodes, spleen, thymus, tonsils. Jobs: Returns leaked fluid to the blood, defends against pathogens.
  • Respiratory system Organs: Nasal cavity, pharynx, larynx, trachea, bronchi, lungs. Jobs: Delivers oxygen to the blood, removes carbon dioxide, makes the voice.
  • Digestive system Organs: Esophagus, stomach, small and large intestine, liver, gallbladder, pancreas, salivary glands. Jobs: Breaks food down, absorbs nutrients, removes the waste from undigested food.
  • Urinary system Organs: Kidneys, ureters, urinary bladder, urethra. Jobs: Filters waste out of the blood, controls water balance, removes urine.
  • Reproductive system Organs: Ovaries and uterus; testes. Jobs: Produces gametes and sex hormones; the uterus supports a baby until birth.

Source: OpenStax Anatomy and Physiology 2e, https://openstax.org/books/anatomy-and-physiology-2e, 31 sections in chapters 1, 4, 5, 6, 8, 9, 10, 11, 17, 20, 21, 22, 23, 25 and 27, read on 2026-09-19. Each question names its own section. Facts checked there; all wording is own work. Checked September 19, 2026.

Answer key for both write-in worksheets 47 lines, made to print

Answer key: human body systems worksheets

Accept a second system wherever the key names one. Assigning organs to systems is not exact, because most organs contribute to more than one.

Name the system, Part A

  • 1. Skin Integumentary
  • 2. Femur (thigh bone) Skeletal
  • 3. Biceps brachii Muscular
  • 4. Brain Nervous
  • 5. Thyroid gland Endocrine
  • 6. Heart Cardiovascular
  • 7. Spleen Lymphatic
  • 8. Lungs Respiratory
  • 9. Stomach Digestive
  • 10. Kidneys Urinary
  • 11. Uterus Reproductive
  • 12. Nails Integumentary
  • 13. Ribs Skeletal
  • 14. Tendons Muscular
  • 15. Spinal cord Nervous
  • 16. Adrenal glands Endocrine
  • 17. Veins Cardiovascular
  • 18. Tonsils Lymphatic
  • 19. Trachea (windpipe) Respiratory
  • 20. Liver Digestive
  • 21. Urinary bladder Urinary
  • 22. Ovaries Reproductive (endocrine is also right: the ovaries release hormones)

Name the system, Part B

  • 23. The system that breaks food down and absorbs its nutrients Digestive
  • 24. The system that detects and processes sensory information, then activates the body's responses Nervous
  • 25. The system that produces gametes, the egg cells and sperm cells Reproductive
  • 26. The system that encloses the body's internal structures and holds many of its sensory receptors Integumentary
  • 27. The system that collects fluid that has leaked out of the blood capillaries and returns it to the blood Lymphatic
  • 28. The system that supports the body and protects internal organs such as the brain and the lungs Skeletal
  • 29. The system that filters waste out of the blood and removes it as urine Urinary
  • 30. The system that sends its messages as hormones carried in the blood Endocrine
  • 31. The system that removes carbon dioxide from the body and delivers oxygen to the blood Respiratory
  • 32. The system that moves the body by contracting and pulling on bones Muscular
  • 33. The system that delivers oxygen and nutrients to every tissue of the body Cardiovascular

Systems working together, Part A

  • 1. You bend your elbow: a muscle shortens and pulls a forearm bone toward the shoulder. Skeletal and muscular
  • 2. Oxygen crosses from the air sacs of the lungs into the blood, which carries it to the tissues. Cardiovascular and respiratory
  • 3. Nutrients absorbed through the wall of the small intestine are carried away in the blood. Cardiovascular and digestive
  • 4. Blood flows into the kidneys, which filter waste out of it. Cardiovascular and urinary
  • 5. Fluid leaks out of the blood capillaries into the tissues. Another system collects it and returns it to the bloodstream. Cardiovascular and lymphatic
  • 6. A signal travels down a motor neuron and a skeletal muscle contracts. Muscular and nervous
  • 7. The diaphragm, a dome-shaped muscle under the lungs, contracts and air flows into the lungs. Muscular and respiratory
  • 8. A gland releases a hormone, and the blood carries it to target cells far away. Endocrine and cardiovascular
  • 9. Skin in sunlight makes vitamin D, which the body needs to absorb calcium for healthy bones. Integumentary and skeletal
  • 10. An ant walks across your arm. Receptors in the skin pick it up and send the news to the brain. Integumentary and nervous
  • 11. Air and food both pass through the pharynx before they go separate ways. Respiratory and digestive
  • 12. The bones of the skull completely surround the brain. Skeletal and nervous

Systems working together, Part B

  • 13. The pancreas Digestive: it sends pancreatic juice with digestive enzymes into the small intestine. Endocrine: it releases the hormones insulin and glucagon into the blood.
  • 14. Any activity Answers vary. A sound answer names three systems and gives each a job that matches the reference sheet, such as muscular (moves the body), respiratory (delivers oxygen to the blood) and cardiovascular (delivers it to the muscles).

Source: OpenStax Anatomy and Physiology 2e, https://openstax.org/books/anatomy-and-physiology-2e, 31 sections in chapters 1, 4, 5, 6, 8, 9, 10, 11, 17, 20, 21, 22, 23, 25 and 27, read on 2026-09-19. Each question names its own section. Facts checked there; all wording is own work. Checked September 19, 2026.

All 114 questions with answers

Which system is this organ in? 65

  • The pancreas releases the hormones insulin and glucagon into the blood. Which system does that job put it in? Answer: Endocrine system. Source: OpenStax Anatomy and Physiology 2e, section 17.9, The Endocrine Pancreas. Read 2026-09-19.
  • The pancreas sends pancreatic juice, full of enzymes, into the small intestine. Which system does that job put it in? Answer: Digestive system. Source: OpenStax Anatomy and Physiology 2e, section 23.6, Accessory Organs in Digestion: The Liver, Pancreas, and Gallbladder. Read 2026-09-19.
  • Which of these is part of the cardiovascular system? Answer: Veins. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which of these is part of the digestive system? Answer: Liver. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which of these is part of the endocrine system? Answer: Thyroid gland. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which of these is part of the integumentary system? Answer: Nails. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
Show all 114 questions (108 more)

Which system is this organ in?, continued

  • Which of these is part of the lymphatic system? Answer: Spleen. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which of these is part of the muscular system? Answer: Triceps brachii. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which of these is part of the nervous system? Answer: Spinal cord. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which of these is part of the reproductive system? Answer: Uterus. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which of these is part of the respiratory system? Answer: Bronchi. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which of these is part of the skeletal system? Answer: Kneecap. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which of these is part of the urinary system? Answer: Ureters. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which organ system are the adrenal glands part of? Answer: Endocrine system. Source: OpenStax Anatomy and Physiology 2e, sections 17.6 and 1.2. Read 2026-09-19.
  • Which organ system are the alveoli, the tiny air sacs of the lungs, part of? Answer: Respiratory system. Source: OpenStax Anatomy and Physiology 2e, section 22.1, Organs and Structures of the Respiratory System. Read 2026-09-19.
  • Which organ system are the arteries part of? Answer: Cardiovascular system. Source: OpenStax Anatomy and Physiology 2e, sections 20.1 and 1.2. Read 2026-09-19.
  • Which organ system are the blood capillaries, the microscopic vessels that supply the tissues, part of? Answer: Cardiovascular system. Source: OpenStax Anatomy and Physiology 2e, sections 20.1 and 21.1. Read 2026-09-19.
  • Which organ system are the bronchi part of? Answer: Respiratory system. Source: OpenStax Anatomy and Physiology 2e, section 22.1, Organs and Structures of the Respiratory System. Read 2026-09-19.
  • Which organ system are the fingernails and toenails part of? Answer: Integumentary system. Source: OpenStax Anatomy and Physiology 2e, sections 5.2 and 1.2. Read 2026-09-19.
  • Which organ system are the kidneys part of? Answer: Urinary system. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which organ system are the lungs part of? Answer: Respiratory system. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which organ system are the lymph nodes part of? Answer: Lymphatic system. Source: OpenStax Anatomy and Physiology 2e, sections 1.2 and 21.1. Read 2026-09-19.
  • Which organ system are the nerves that run down the arms and legs part of? Answer: Nervous system. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which organ system are the oil glands beside each hair part of? Answer: Integumentary system. Source: OpenStax Anatomy and Physiology 2e, section 5.2, Accessory Structures of the Skin. Read 2026-09-19.
  • Which organ system are the ovaries, where egg cells develop, part of? Answer: Reproductive system. Source: OpenStax Anatomy and Physiology 2e, sections 1.2 and 27.2. Read 2026-09-19.
  • Which organ system are the parathyroid glands part of? Answer: Endocrine system. Source: OpenStax Anatomy and Physiology 2e, section 17.5, The Parathyroid Glands. Read 2026-09-19.
  • Which organ system are the ribs part of? Answer: Skeletal system. Source: OpenStax Anatomy and Physiology 2e, sections 6.1 and 1.2. Read 2026-09-19.
  • Which organ system are the salivary glands part of? Answer: Digestive system. Source: OpenStax Anatomy and Physiology 2e, section 23.3, The Mouth, Pharynx, and Esophagus. Read 2026-09-19.
  • Which organ system are the sweat glands part of? Answer: Integumentary system. Source: OpenStax Anatomy and Physiology 2e, sections 5.2 and 17.1. Read 2026-09-19.
  • Which organ system are the tendons that tie muscles to bones part of? Answer: Muscular system. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which organ system are the testes, where sperm cells are made, part of? Answer: Reproductive system. Source: OpenStax Anatomy and Physiology 2e, sections 1.2 and 27.1. Read 2026-09-19.
  • Which organ system are the tonsils part of? Answer: Lymphatic system. Source: OpenStax Anatomy and Physiology 2e, section 21.1, Anatomy of the Lymphatic and Immune Systems. Read 2026-09-19.
  • Which organ system are the ureters part of? Answer: Urinary system. Source: OpenStax Anatomy and Physiology 2e, section 25.2, Gross Anatomy of Urine Transport. Read 2026-09-19.
  • Which organ system are the veins part of? Answer: Cardiovascular system. Source: OpenStax Anatomy and Physiology 2e, sections 20.1 and 1.2. Read 2026-09-19.
  • Which organ system are the vertebrae, the bones of the spine, part of? Answer: Skeletal system. Source: OpenStax Anatomy and Physiology 2e, sections 6.1 and 1.2. Read 2026-09-19.
  • Which organ system is the biceps brachii in the upper arm part of? Answer: Muscular system. Source: OpenStax Anatomy and Physiology 2e, sections 11.5 and 1.2. Read 2026-09-19.
  • Which organ system is the brain part of? Answer: Nervous system. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which organ system is the cartilage that covers the ends of bones at a joint part of? Answer: Skeletal system. Source: OpenStax Anatomy and Physiology 2e, sections 9.4 and 6.1 and 1.2. Read 2026-09-19.
  • Which organ system is the esophagus part of? Answer: Digestive system. Source: OpenStax Anatomy and Physiology 2e, section 23.3, The Mouth, Pharynx, and Esophagus. Read 2026-09-19.
  • Which organ system is the femur, the thigh bone, part of? Answer: Skeletal system. Source: OpenStax Anatomy and Physiology 2e, sections 8.4 and 1.2. Read 2026-09-19.
  • Which organ system is the gallbladder part of? Answer: Digestive system. Source: OpenStax Anatomy and Physiology 2e, sections 23.6 and 25.2. Read 2026-09-19.
  • Which organ system is the hair part of? Answer: Integumentary system. Source: OpenStax Anatomy and Physiology 2e, sections 5.2 and 1.2. Read 2026-09-19.
  • Which organ system is the heart part of? Answer: Cardiovascular system. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which organ system is the large intestine part of? Answer: Digestive system. Source: OpenStax Anatomy and Physiology 2e, sections 23.5 and 1.2. Read 2026-09-19.
  • Which organ system is the larynx, which holds the vocal cords, part of? Answer: Respiratory system. Source: OpenStax Anatomy and Physiology 2e, section 22.1, Organs and Structures of the Respiratory System. Read 2026-09-19.
  • Which organ system is the liver part of? Answer: Digestive system. Source: OpenStax Anatomy and Physiology 2e, sections 23.6 and 1.2. Read 2026-09-19.
  • Which organ system is the nasal cavity part of? Answer: Respiratory system. Source: OpenStax Anatomy and Physiology 2e, sections 22.1 and 1.2. Read 2026-09-19.
  • Which organ system is the patella, the kneecap, part of? Answer: Skeletal system. Source: OpenStax Anatomy and Physiology 2e, section 8.4, Bones of the Lower Limb. Read 2026-09-19.
  • Which organ system is the pharynx (the throat), which carries air down to the larynx, part of? Answer: Respiratory system. Source: OpenStax Anatomy and Physiology 2e, sections 22.1 and 23.3. Read 2026-09-19.
  • Which organ system is the pineal gland part of? Answer: Endocrine system. Source: OpenStax Anatomy and Physiology 2e, section 17.7, The Pineal Gland. Read 2026-09-19.
  • Which organ system is the pituitary gland part of? Answer: Endocrine system. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which organ system is the quadriceps group on the front of the thigh part of? Answer: Muscular system. Source: OpenStax Anatomy and Physiology 2e, sections 11.6 and 1.2. Read 2026-09-19.
  • Which organ system is the skin part of? Answer: Integumentary system. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which organ system is the skull part of? Answer: Skeletal system. Source: OpenStax Anatomy and Physiology 2e, sections 6.1 and 1.2. Read 2026-09-19.
  • Which organ system is the small intestine part of? Answer: Digestive system. Source: OpenStax Anatomy and Physiology 2e, sections 23.5 and 1.2. Read 2026-09-19.
  • Which organ system is the spinal cord part of? Answer: Nervous system. Source: OpenStax Anatomy and Physiology 2e, sections 1.2 and 6.1. Read 2026-09-19.
  • Which organ system is the spleen part of? Answer: Lymphatic system. Source: OpenStax Anatomy and Physiology 2e, sections 21.1 and 1.2. Read 2026-09-19.
  • Which organ system is the stomach part of? Answer: Digestive system. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which organ system is the thymus part of? Answer: Lymphatic system. Source: OpenStax Anatomy and Physiology 2e, sections 21.1 and 1.2. Read 2026-09-19.
  • Which organ system is the thyroid gland part of? Answer: Endocrine system. Source: OpenStax Anatomy and Physiology 2e, sections 17.4 and 1.2. Read 2026-09-19.
  • Which organ system is the trachea, or windpipe, part of? Answer: Respiratory system. Source: OpenStax Anatomy and Physiology 2e, sections 22.1 and 23.3. Read 2026-09-19.
  • Which organ system is the triceps brachii on the back of the upper arm part of? Answer: Muscular system. Source: OpenStax Anatomy and Physiology 2e, sections 11.5 and 1.2. Read 2026-09-19.
  • Which organ system is the urethra, which carries urine out of the body, part of? Answer: Urinary system. Source: OpenStax Anatomy and Physiology 2e, section 25.2, Gross Anatomy of Urine Transport. Read 2026-09-19.
  • Which organ system is the urinary bladder part of? Answer: Urinary system. Source: OpenStax Anatomy and Physiology 2e, sections 25.2 and 1.2. Read 2026-09-19.
  • Which organ system is the uterus part of? Answer: Reproductive system. Source: OpenStax Anatomy and Physiology 2e, sections 1.2 and 27.2. Read 2026-09-19.

Which system does this job? 27

  • How many organ systems does this worksheet, like the OpenStax anatomy text, divide the human body into? Answer: 11. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • New blood cells are made in red marrow. Which system holds the red marrow? Answer: Skeletal system. Source: OpenStax Anatomy and Physiology 2e, section 6.1, The Functions of the Skeletal System. Read 2026-09-19.
  • What is an organ system? Answer: A group of organs that work together. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which system breaks food down and absorbs its nutrients? Answer: Digestive system. Source: OpenStax Anatomy and Physiology 2e, sections 1.2 and 23.5. Read 2026-09-19.
  • Which system collects fluid that has leaked out of the blood capillaries and returns it to the blood? Answer: Lymphatic system. Source: OpenStax Anatomy and Physiology 2e, sections 1.2 and 21.1. Read 2026-09-19.
  • Which system controls blood sugar with the hormones insulin and glucagon? Answer: Endocrine system. Source: OpenStax Anatomy and Physiology 2e, section 17.9, The Endocrine Pancreas. Read 2026-09-19.
  • Which system controls how much water the body keeps or lets go? Answer: Urinary system. Source: OpenStax Anatomy and Physiology 2e, sections 1.2 and 25.8. Read 2026-09-19.
  • Which system cools the body by releasing sweat onto its surface? Answer: Integumentary system. Source: OpenStax Anatomy and Physiology 2e, section 5.3, Functions of the Integumentary System. Read 2026-09-19.
  • Which system defends the body against pathogens with organs such as the spleen and the lymph nodes? Answer: Lymphatic system. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which system delivers oxygen and nutrients to every tissue of the body? Answer: Cardiovascular system. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which system detects and processes sensory information, then activates the body's responses? Answer: Nervous system. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which system encloses the body's internal structures and holds many of its sensory receptors? Answer: Integumentary system. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which system filters waste out of the blood and removes it as urine? Answer: Urinary system. Source: OpenStax Anatomy and Physiology 2e, sections 1.2 and 25.3 and 25.2. Read 2026-09-19.
  • Which system has a pump that pushes blood through vessels? Answer: Cardiovascular system. Source: OpenStax Anatomy and Physiology 2e, sections 20.1 and 1.2. Read 2026-09-19.
  • Which system helps keep the body warm with the heat its contractions give off? Answer: Muscular system. Source: OpenStax Anatomy and Physiology 2e, sections 1.2 and 4.4. Read 2026-09-19.
  • Which system makes bile and stores it in the gallbladder? Answer: Digestive system. Source: OpenStax Anatomy and Physiology 2e, section 23.6, Accessory Organs in Digestion: The Liver, Pancreas, and Gallbladder. Read 2026-09-19.
  • Which system makes the sound of your voice as air passes the vocal cords? Answer: Respiratory system. Source: OpenStax Anatomy and Physiology 2e, section 22.1, Organs and Structures of the Respiratory System. Read 2026-09-19.
  • Which system makes vitamin D when sunlight reaches it? Answer: Integumentary system. Source: OpenStax Anatomy and Physiology 2e, section 5.3, Functions of the Integumentary System. Read 2026-09-19.
  • Which system moves the body by contracting and pulling on bones? Answer: Muscular system. Source: OpenStax Anatomy and Physiology 2e, sections 1.2 and 6.1. Read 2026-09-19.
  • Which system produces gametes, the egg cells and sperm cells? Answer: Reproductive system. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which system removes carbon dioxide from the body and delivers oxygen to the blood? Answer: Respiratory system. Source: OpenStax Anatomy and Physiology 2e, sections 1.2 and 22.1. Read 2026-09-19.
  • Which system removes the waste left over from undigested food? Answer: Digestive system. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which system sends fast electrical signals along neurons? Answer: Nervous system. Source: OpenStax Anatomy and Physiology 2e, section 17.1, An Overview of the Endocrine System. Read 2026-09-19.
  • Which system sends its messages as hormones carried in the blood? Answer: Endocrine system. Source: OpenStax Anatomy and Physiology 2e, section 17.1, An Overview of the Endocrine System. Read 2026-09-19.
  • Which system stores most of the body's calcium and releases it into the blood when it is needed? Answer: Skeletal system. Source: OpenStax Anatomy and Physiology 2e, section 6.1, The Functions of the Skeletal System. Read 2026-09-19.
  • Which system supports a baby as it develops before birth? Answer: Reproductive system. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Which system supports the body and protects internal organs such as the brain and the lungs? Answer: Skeletal system. Source: OpenStax Anatomy and Physiology 2e, section 6.1, The Functions of the Skeletal System. Read 2026-09-19.

Which two systems work together? 22

  • A gland releases a hormone, and the blood carries it to target cells far away. Which two systems are working together? Answer: Endocrine and cardiovascular. Source: OpenStax Anatomy and Physiology 2e, section 17.1, An Overview of the Endocrine System. Read 2026-09-19.
  • A signal travels down a motor neuron and a skeletal muscle contracts. Which two systems are working together? Answer: Muscular and nervous. Source: OpenStax Anatomy and Physiology 2e, section 10.2, Skeletal Muscle. Read 2026-09-19.
  • Air and food both pass through the pharynx before they go separate ways. Which two systems share it? Answer: Respiratory and digestive. Source: OpenStax Anatomy and Physiology 2e, section 22.1, Organs and Structures of the Respiratory System. Read 2026-09-19.
  • An ant walks across your arm. Receptors in the skin pick it up and send the news to the brain. Which two systems are working together? Answer: Integumentary and nervous. Source: OpenStax Anatomy and Physiology 2e, section 5.3, Functions of the Integumentary System. Read 2026-09-19.
  • Blood calcium drops, the parathyroid glands release a hormone, and bones release calcium into the blood. Which two systems are working together? Answer: Skeletal and endocrine. Source: OpenStax Anatomy and Physiology 2e, sections 17.5 and 6.1. Read 2026-09-19.
  • Blood flows into the kidneys, which filter waste out of it. Which two systems are working together? Answer: Cardiovascular and urinary. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • The bones of the skull completely surround the brain. Which two systems are working together? Answer: Skeletal and nervous. Source: OpenStax Anatomy and Physiology 2e, section 6.1, The Functions of the Skeletal System. Read 2026-09-19.
  • The diaphragm, a dome-shaped muscle under the lungs, contracts and air flows into the lungs. Which two systems are working together? Answer: Muscular and respiratory. Source: OpenStax Anatomy and Physiology 2e, sections 22.3 and 11.4. Read 2026-09-19.
  • Fluid leaks out of the blood capillaries into the tissues. Another system collects it and returns it to the bloodstream. Which two systems are working together? Answer: Cardiovascular and lymphatic. Source: OpenStax Anatomy and Physiology 2e, sections 21.1 and 1.2. Read 2026-09-19.
  • The hypothalamus, a part of the brain, tells the pituitary gland when to release its hormones. Which two systems are working together? Answer: Nervous and endocrine. Source: OpenStax Anatomy and Physiology 2e, sections 17.3 and 17.7. Read 2026-09-19.
  • In a scare, the adrenal glands release epinephrine and the heart beats faster. Which two systems are working together? Answer: Endocrine and cardiovascular. Source: OpenStax Anatomy and Physiology 2e, section 17.6, The Adrenal Glands. Read 2026-09-19.
  • Nutrients absorbed through the wall of the small intestine are carried away in the blood. Which two systems are working together? Answer: Cardiovascular and digestive. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • The ovaries and the testes produce gametes, and they also release hormones into the blood. Which two systems do they belong to? Answer: Endocrine and reproductive. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • Oxygen crosses from the air sacs of the lungs into the blood, which carries it to the tissues. Which two systems are working together? Answer: Cardiovascular and respiratory. Source: OpenStax Anatomy and Physiology 2e, section 1.2, Structural Organization of the Human Body. Read 2026-09-19.
  • The pituitary gland releases the hormone ADH, and the kidneys respond by keeping more water in the body. Which two systems are working together? Answer: Endocrine and urinary. Source: OpenStax Anatomy and Physiology 2e, section 25.8, Endocrine Regulation of Kidney Function. Read 2026-09-19.
  • Red marrow inside the bones makes new red blood cells, which then travel in the blood. Which two systems are working together? Answer: Skeletal and cardiovascular. Source: OpenStax Anatomy and Physiology 2e, section 6.1, The Functions of the Skeletal System. Read 2026-09-19.
  • The ribs form a cage around the lungs and keep them from being crushed. Which two systems are working together? Answer: Skeletal and respiratory. Source: OpenStax Anatomy and Physiology 2e, section 6.1, The Functions of the Skeletal System. Read 2026-09-19.
  • Skin in sunlight makes vitamin D, which the body needs to absorb calcium for healthy bones. Which two systems are working together? Answer: Integumentary and skeletal. Source: OpenStax Anatomy and Physiology 2e, section 5.3, Functions of the Integumentary System. Read 2026-09-19.
  • You are cold. The brain sets off shivering, and the shaking muscles give off heat. Which two systems are working together? Answer: Muscular and nervous. Source: OpenStax Anatomy and Physiology 2e, sections 1.5 and 4.4. Read 2026-09-19.
  • You bend your elbow: a muscle shortens and pulls a forearm bone toward the shoulder. Which two systems are working together? Answer: Skeletal and muscular. Source: OpenStax Anatomy and Physiology 2e, sections 6.1 and 1.2. Read 2026-09-19.
  • You get hot, and small blood vessels in the skin widen so that heat carried by the blood can escape. Which two systems are working together? Answer: Integumentary and cardiovascular. Source: OpenStax Anatomy and Physiology 2e, section 5.3, Functions of the Integumentary System. Read 2026-09-19.
  • You get hot. The nervous system notices, and sweat glands in the skin switch on. Which two systems are working together? Answer: Integumentary and nervous. Source: OpenStax Anatomy and Physiology 2e, section 5.3, Functions of the Integumentary System. Read 2026-09-19.

How this list was compiled: OpenStax Anatomy and Physiology 2e, https://openstax.org/books/anatomy-and-physiology-2e, 31 sections in chapters 1, 4, 5, 6, 8, 9, 10, 11, 17, 20, 21, 22, 23, 25 and 27, read on 2026-09-19. Each question names its own section. Facts checked there; all wording is own work Licence: own work

How it works

This human body systems worksheet is a bank of 114 questions on the eleven organ systems. One set names an organ and asks which system it belongs to. One gives a job and asks which system does it. The third describes something the body does and asks which two systems are working together. Answer on screen, or print two write-in sheets, a reference sheet and the key.

Read the full guide

Three sets: organs, jobs and teamwork

Which system is this organ in has 65 questions. It takes 53 organs in turn, from the skin to the testes, then turns the question around: which of these four organs is part of the lymphatic system? Which system does this job has 27 questions that start from the work, such as making blood cells or returning leaked fluid to the blood. Which two systems work together has 22 short scenes, from bending an elbow to shivering. That third set is the body system interactions worksheet on this page.

Organs that belong to two systems

The source for this page says that assigning organs to systems can be imprecise, because most organs contribute to more than one. The pancreas makes digestive enzymes and also the hormones insulin and glucagon. The ovaries and the testes make gametes and release hormones. The pharynx carries both air and food. Where an organ serves two systems, only one of them appears among the four choices, so no question has two right answers. The note after the answer names the other system.

Printing: two write-in sheets, a reference sheet and a key

Under the quiz are four sheets, each with its own print button. Name the system lists 22 organs, two from each system, then 11 jobs, with a line to write on beside every row. Systems working together gives 12 scenes with two blanks each, then two questions to answer in a sentence. The reference sheet sets out all eleven systems with their main organs and jobs, and the key covers both sheets. The whole set, in the Sheet to print menu, gives one full set as multiple choice, with a bubble sheet and a short key.

  • If integumentary is a new word, tie it to skin. The system is the skin plus hair, nails, sweat glands and oil glands.
  • Learn the spleen, the thymus and the tonsils together with the lymph nodes. All four are lymphatic, and only the nodes say so in the name.
  • The four sheets are this page's body system worksheets for paper. Give out the reference sheet after the write-in sheet, so students can mark their own work.
  • A wrong answer waits in the missed pile until you get it right. Clear the pile the next day, before a new round.
  • Exam draws 20 questions from all three sets and runs a 15 minute clock. There is no pass mark, only a score and your weakest set.

Questions and answers

How many body systems are there?

This worksheet uses eleven: integumentary, skeletal, muscular, nervous, endocrine, cardiovascular, lymphatic, respiratory, digestive, urinary and reproductive. That is the list in OpenStax Anatomy and Physiology 2e, which places immune defense under the lymphatic system. Other books group a few systems differently, so you may see another count. If your class uses a different list, follow your teacher's.

Does this organ system worksheet come with answers?

Yes. Every question shows the right choice and a short reason once you check it, with the section of the source it was checked against. The full list under the quiz gives all 114 answers, and the two write-in sheets have their own key. The page does not hold the key to a worksheet from your textbook or another publisher.

Why does the key accept two answers for the ovaries?

Because both are right. The ovaries produce egg cells, which is reproductive work, and they release hormones into the blood, which is endocrine work. The source lists them under both systems, and the testes and the pancreas are in the same position. On paper a student can write either system. On screen only one of the two is offered, so the choice is never a trap.

Are these body system games?

Not quite. Human body systems games usually have lives, levels or characters, and this quiz has none. It does keep a score, and it saves the questions you miss.

Can I save the sheets as a PDF?

Yes. Press Print this sheet under any of the four sheets, then choose Save as PDF in your browser's print window. Each sheet saves as its own file, and the multiple-choice question sheet and its answer key save the same way. The name and date lines on the write-in sheets stay blank for the student.