• 31 parts
  • Checked September 2026

Arm Bones Quiz

Tap the ring on each bone the quiz names, from the clavicle down to the distal phalanges.

Arm Bones Quiz

Name Date

Tap the trochlea of the humerus

1 of 8

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
More options

Write the name of each numbered part.Answer key

  1. Clavicle (collarbone)
  2. Scapula (shoulder blade)
  3. Humerus (upper arm bone)
  4. Acromion
  5. Glenoid cavity
  6. Head of the humerus
  7. Deltoid tuberosity
  8. Trochlea of the humerus
  9. Radius
  10. Ulna
  11. Head of the radius
  12. Radial tuberosity
  13. Styloid process of the radius
  14. Styloid process of the ulna
  15. Olecranon
  16. Scaphoid
  17. Lunate
  18. Triquetrum
  19. Pisiform
  20. Hamate
  21. Capitate
  22. Trapezoid
  23. Trapezium
  24. First metacarpal
  25. Second metacarpal
  26. Third metacarpal
  27. Fourth metacarpal
  28. Fifth metacarpal
  29. Proximal phalanges
  30. Middle phalanges
  31. Distal phalanges

Drawn for this site on 2026-10-05 by script as a right arm seen from the front, in four panels. Licence: own drawing; outlines after public domain plates.

Each numbered ring is a button. Use the arrow keys to move between them and Enter to choose. Names are read out in Study, and once a part is answered.

Next step Step back: 35 bones of the whole body, front and back

All 31 parts on the diagram

Show the list

Shoulder and upper arm: 8 parts 8

  1. Clavicle (collarbone) Works as a strut that holds the scapula out to the side. Its inner end meets the sternum at the only bony joint between the shoulder girdle and the trunk.
  2. Scapula (shoulder blade) A flat triangle with three borders and three angles. The glenoid cavity sits at the outer angle. It lies on the back of the rib cage but forms no joint with the ribs: its only bony links are the clavicle and the humerus.
  3. Humerus (upper arm bone) The only bone of the upper arm. Just below its head and tubercles the shaft narrows at the surgical neck.
  4. Acromion The summit of the shoulder. The spine of the scapula ends in this flat shelf, which overhangs the shoulder socket. It meets the clavicle at the acromioclavicular joint.
  5. Glenoid cavity A shallow socket, only about one third the size of its ball. That is why the shoulder moves so freely.
  6. Head of the humerus A smooth, rounded surface that faces inward to meet the scapula. The faint groove around its edge is the anatomical neck.
  7. Deltoid tuberosity Where the deltoid, the muscle that caps the shoulder, attaches. A rough patch shaped like a V, on the outer side of the humerus shaft.
  8. Trochlea of the humerus Shaped like a pulley. It fits the trochlear notch of the ulna to make the hinge of the elbow. The rounded knob beside it, the capitulum, meets the radius.

Elbow and forearm: 7 parts 7

  1. Radius The forearm bone on the thumb side. Its broad lower end carries the wrist joint. When the palm turns to face backward, that end crosses over the ulna and the two bones make an X.
  2. Ulna The forearm bone on the little finger side. Its C-shaped trochlear notch grips the humerus at the elbow, and its small head is at the wrist end, where it touches no carpal bone directly.
  3. Head of the radius Disc-shaped. Its top meets the capitulum of the humerus. Its rim turns against the radial notch of the ulna inside a ring of ligament.
  4. Radial tuberosity Where the tendon of the biceps brachii attaches. A rough bump on the inner side of the radius, just below the neck.
  5. Styloid process of the radius A pointed projection on the thumb side of the wrist. It reaches farther toward the hand than the matching point on the ulna.
  6. Styloid process of the ulna A short, pointed peg on the little finger side of the wrist. It stands out from the back of the head of the ulna.
  7. Olecranon The thick upper end of the ulna, the point of the elbow. With the arm straight it slots into the olecranon fossa on the back of the humerus.

Wrist: 8 carpal bones 8

  1. Scaphoid Boat-shaped. It meets the radius at the wrist joint.
  2. Lunate Moon-shaped, which is what its name means. With the scaphoid it meets the lower end of the radius at the wrist joint.
  3. Triquetrum Three-cornered. The third bone of the row that meets the forearm. It carries the pisiform on its palm side.
  4. Pisiform Pea-shaped. It is a sesamoid bone inside a tendon. It rests on the palm side of the triquetrum. It makes the bump you can feel at the base of the hand on the little finger side.
  5. Hamate A wedge-shaped bone whose hook stands out toward the palm. It carries the fourth and fifth metacarpals.
  6. Capitate Head-shaped, which is what its name means. The largest of the eight carpals. It sits in the center of the wrist and carries the third metacarpal.
  7. Trapezoid A small bone wedged between the trapezium and the capitate. It carries the second metacarpal.
  8. Trapezium It meets the first metacarpal at a saddle joint. That joint is where the thumb moves to touch the tip of a finger.

Hand: 8 parts 8

  1. First metacarpal Metacarpals are numbered from the thumb. This one moves on its own at the trapezium, which is what sets the thumb free of the fingers.
  2. Second metacarpal With the third it is held almost still at the wrist. So the two make the rigid center of the hand.
  3. Third metacarpal It stands on the capitate, in line with the middle finger. Like the second it barely moves at its base.
  4. Fourth metacarpal It rests on the hamate and the edge of the capitate. Unlike the second and third it can move a little at its base, and the fifth moves more.
  5. Fifth metacarpal The last of the five, counted from the thumb. It shares the hamate with the fourth, and its far end is the knuckle of the little finger.
  6. Proximal phalanges Five in each hand: one in the thumb, one in each finger. Each meets the head of a metacarpal at a knuckle.
  7. Middle phalanges Four in each hand. The thumb has none, which is why it has two bones and each finger has three.
  8. Distal phalanges Five in each hand, under the fingertips and tip of the thumb. With the other two rows they make the 14 phalanges of a hand.

How this list was compiled: Bones, landmarks and detail lines were checked on 2026-09-19 against OpenStax Anatomy and Physiology 2e, sections 8.1, 8.2, 9.5 and 9.6 (https://openstax.org/books/anatomy-and-physiology-2e/pages/8-2-bones-of-the-upper-limb), and the English Wikipedia articles on single bones, among them https://en.wikipedia.org/wiki/Carpal_bones. Corrections made on 2026-09-20 were checked on https://en.wikipedia.org/wiki/Scapula and https://en.wikipedia.org/wiki/Shoulder_girdle. Every name was checked again on 2026-09-30 against OpenStax sections 8.1 (https://openstax.org/books/anatomy-and-physiology-2e/pages/8-1-the-pectoral-girdle) and 8.2 and the English Wikipedia articles Clavicle, Scapula, Humerus, Radius (bone), Ulna, Olecranon, Carpal bones, Metacarpal bones and Phalanx bone. Licence: own work

The drawing: Drawn for this site on 2026-10-05 by script as a right arm seen from the front, in four panels. The outlines were measured off public domain plates, Henry Vandyke Carter's drawings in Henry Gray, Anatomy of the Human Body (20th US edition, 1918): fig. 207 for the humerus (https://commons.wikimedia.org/wiki/File:Gray207.png), fig. 202 for the blade of the scapula (https://commons.wikimedia.org/wiki/File:Gray202.png), fig. 200 for the clavicle (https://commons.wikimedia.org/wiki/File:Gray200.png), fig. 213 for the radius and ulna (https://commons.wikimedia.org/wiki/File:Gray213.png), figs. 208 and 214 for the elbow from behind (https://commons.wikimedia.org/wiki/File:Gray208.png and https://commons.wikimedia.org/wiki/File:Gray214.png) and fig. 219 for the bones of the hand (https://commons.wikimedia.org/wiki/File:Gray219.png). The carpals and the wrist ends of the forearm bones were read off the plate of the left wrist from the palm side in Johannes Sobotta, Atlas and Text-book of Human Anatomy (1909), public domain (https://commons.wikimedia.org/wiki/File:Sobo_1909_127.png). Every plate shows a left bone and was mirrored to give a right one. The glenoid cavity, the coracoid process and the acromion are placed as an articulated shoulder shows them from the front (Gray, fig. 326, https://commons.wikimedia.org/wiki/File:Gray326.png), and the clavicle is drawn as a bar seen from the front. Bones that are only context in a panel are left untinted and carry no ring. Licence: own drawing; outlines after public domain plates

How it works

This arm bones quiz covers one right arm in four close-ups: shoulder and upper arm, elbow and forearm, wrist, and hand. 21 rings name every bone, the eight carpals one by one. 10 more mark landmarks such as the olecranon.

Read the full guide

Four close-ups, one at a time

The quiz takes one close-up at a time and zooms to it: rings 1 to 8 on the shoulder and upper arm, 9 to 15 on the elbow and forearm, 16 to 23 on the wrist, 24 to 31 on the hand. It names a part and you tap its ring. A wrong tap shows the right part.

Bones first, landmarks later

Under Start from, Bones only: 21 is the round for a bones of the upper limb quiz in class. Landmarks, harder: 10 asks the acromion, the olecranon and eight more. Wrist: 8 carpal bones drills the carpals alone. Name it lights a ring for you to name, from 4 choices or typed.

  • Carpal rings run in a loop: 16 to 19 from the thumb along the forearm row, then 20 to 23 back along the palm row.
  • Trapezium or trapezoid: the trapezium is the one under the thumb. Typed answers take collarbone for clavicle and shoulder blade for scapula.
  • Metacarpals are numbered from the thumb. The thumb has no middle phalanx: two bones against three in each finger.

Questions and answers

How many bones are in the arm?

Each upper limb has 30: the humerus, radius and ulna, 8 carpals, 5 metacarpals and 14 phalanges. With the clavicle and scapula that is 32, which is what an upper extremity bones quiz covers.

What are the 8 carpal bones in order?

From the thumb side, the row next to the forearm is scaphoid, lunate, triquetrum, pisiform. The row next to the palm is trapezium, trapezoid, capitate, hamate. This is a right arm seen from the front, so the thumb side is on your left.

Is there an unlabeled arm bones diagram to print?

Yes. Under More options, the blank print is an upper limb labeling sheet: the four close-ups, rings numbered 1 to 31 and a line for each name. The labeled print is its key.

Are the clavicle and scapula arm bones?

Strictly, no. They form the pectoral girdle, which joins the arm to the trunk. They are rings 1 and 2 here because the humerus hangs from the scapula. The epicondyles and other landmarks of a single bone have no ring on this drawing.

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