Sample test questions:

1. The arterial anastomosis around the scapula is formed by:

A. anterior and posterior humeral circumflex arteries

B. scapular circumflex, suprascapular and transverse cervical arteries

C. scapular circumflex and profunda brachii arteries

D. subscapular and subclavian arteries

E. subscapular and lateral thoracic arteries

2. Which of the following is responsible for the ability to form an "O" (round pinch) between thumb and forefinger?

A. ulnar nerve

B. superficial branch of radial nerve

C. posterior interosseous nerve

D. median nerve

E. anterior interosseous nerve

3. Which of the following flexor muscles is not preaxial?

A. coracobrachialis

B. palmaris longus

C. brachioradialis

D. flexor pollicis longus

E. flexor digitorum profundus

Case 2: A 55-year-old woman previously diagnosed with multiple sclerosis (a demyelinating disorder resulting in peripheral neuropathy) reports to her physician with the following symptoms: clumsiness in the use of her right hand; inability to straighten the ring and little finger; loss of sensation at the tip of the little finger; a deep depression in the regtion between first and second metacarpals (first web space).

Name the nerve affected by the disease process.

The ulnar nerve

Why is the patient unable to straighten the last two fingers of her right hand?

Loss of function of the medial 2 lumbricales and palmar interossei muscles

What is responsible for the abnormal depression in the region of the first web space?

Atrophy of the first dorsal interosseus muscle

Answers to Identifications

A. Corocoid Process

B. Biceps

C. Superficial flexor from medial condyle