Bones of the Upper Limb

Question 0

Which bone of the forearm articulates with the humerus?

Answer 0

Ulna

Question 1

Describe the membrane which attaches the radius and ulna.

When is it tense or relaxed?

Answer 1

Interosseus membrane. Fibrous connective tissue

Tense in pronation, relaxed in supination

Question 3

Describe articulation of the ulna.

Answer 3

On extension of the forearm, moves into the olecranon fossa on the posterior of the humerus.

Question 4

What two bones does the clavicle articulate with?

Answer 4

Sternum and acromium

Question 5

You have done an x-ray on a patient complaining of shoulder pain on articulation. The gap between the glenoid cavity and the head of the humerus appears smaller than usual. Why?

Answer 5

The patient has arthritis.

The gap is smaller due to the loss of hyaline cartilage in the joint.

Question 6

State the bones of the hand, from lateral to medial and proximal to distal.

Answer 6

Scaphoid, lunate, triquetrium, pisiform, trapezium, trapezioid, capitate, hamate