Upper Limb Anatomy

Which four muscles make up the rotator cuff?

1. Deltoid, biceps, triceps and teres major
2. Brachialis, brachioradialis, coracobrachialis and anconeus
3. Pectoralis major, pectoralis minor, serratus anterior and trapezius
4. Supraspinatus, infraspinatus, teres minor and subscapularis

Which muscle initiates abduction of the arm (the first 15° or so)?

1. Supraspinatus
2. Deltoid
3. Serratus anterior
4. Trapezius

Which nerve supplies the deltoid?

1. Radial nerve
2. Ulnar nerve
3. Axillary nerve
4. Musculocutaneous nerve

The axillary nerve is at risk in:

1. Carpal tunnel syndrome
2. Fractures of the surgical neck of the humerus and shoulder dislocation
3. Fractures of the scaphoid
4. Fractures of the medial epicondyle

A fracture of the shaft of the humerus can injure the radial nerve, causing:

1. Ape hand
2. Winged scapula
3. Claw hand
4. Wrist drop

Ulnar nerve injury at the wrist typically causes:

1. Loss of elbow flexion
2. Winged scapula
3. A claw hand
4. Wrist drop

Compression of which nerve causes carpal tunnel syndrome?

1. Axillary nerve
2. Radial nerve
3. Median nerve
4. Ulnar nerve