Anatomy- Upper Limb

Question 1

Subglenoid displacement of the humeral head causes injury to this nerve supply of the shoulder joint causing paralysis of the deltoid muscle and loss of skin sensation over the lower half of the deltoid.

Answer 1

Axillary nerve

Question 2

What type of movements can the superior radioulnar joint produce?

Answer 2

Pronation, supination

Question 3

Which of the following is not an articulating structure in the radiocarpal joint?
A. Hamate
B. Lunate
C. Scaphoid 
D. Triquetrum

Answer 3

A. Hamate

Question 4

What is the action of the palmaris longus at the radiocarpal (wrist) joint?
A. Abduction
B. Adduction
C. Extension
D. Flexion

Answer 4

D. Flexion

Question 5

Both the flexor and extensor retinaculum are attached medially to the pisiform and the hook of the hamate. What are their lateral attachments?

Answer 5

Flexor: scaphoid and trapezium
Extensor: distal end of radius

Question 6

The palmar aponeurosis continues proximally as which flexor muscle tendon?

Answer 6

Palmaris longus tendon (it is also attached to the flexor retinaculum)

Question 7

What metacarpal bone separates the thenar and the midpalmar space?

Answer 7

3rd metacarpal bone

Question 8

The axillary artery is the direct continuation of _____.

Answer 8

Subclavian artery

Question 9

Which of the following is not a branch of the 3rd part of the axillary artery?
A. Anterior circumflex artery
B. Lateral thoracic artery
C. Posterior circumflex artery
D. Subscapular artery

Answer 9

B. Lateral thoracic artery

Question 10

Which part of the axillary branches to vessels that become the major blood supply to the breast?

Answer 10

Second part (thoracoacromial and lateral thoracic artery)

Question 11

The brachial artery begins as a direct continuation of the axillary artery at the lower border of this muscle.

Answer 11

Teres major

Question 12

The brachial artery divides into the radial and ulnar arteries at the level of which of the following anatomic landmark?
A. Coronoid process of the ulna
B. Interosseous membrane
C. Neck of the radius
D. Olecranon process of the ulna

Answer 12

C. Neck of the radius

Question 13

Which of the following is commonly used for venipuncture and central venous catheterization?
A. Basilic vein
B. Cephalic vein
C. Median cubital vein
D. Median vein of the forearm

Answer 13

A. Basilic vein

Question 14

Which of the following nodes drain the lateral part of the breast and the superficial vessels from the thoracoabdominal wall above the umbilicus?
A. Anterior/pectoral nodes
B. Central nodes
C. Infraclavicular nodes
D. Lateral nodes

Answer 14

A. Anterior/pectoral nodes

Question 15

Which of the following nodes receive most of the lymph vessels from the upper limb?
A. Anterior/pectoral nodes
B. Central nodes
C. Infraclavicular nodes
D. Lateral nodes

Answer 15

D. Lateral nodes