Third Part of Axillary Nerve

Question 1

Where?

Answer 1

Extends from the lower border of the pectoralis

minor to the lower border of the teres major

Question 2

Anteriorly

Answer 2

The pectoralis major for a short distance; lower down the artery it is crossed by the medial root of the median nerve

Question 3

Posteriorly

Answer 3

The subscapularis, the latissimus dorsi, and the teres major. The axillary and radial nerves also lie behind the artery

Question 4

Laterally

Answer 4

The coracobrachialis, the biceps, and the humerus. The lateral root of the median and the musculocutaneous nerves also lie on the lateral side

Question 5

Medially

Answer 5

The ulnar nerve, the axillary vein, and the medial cutaneous nerve of the arm