Question

The pectoralis minor muscle is an important landmark in identifying and describing neighboring structures in the chest and axillary regions. Which of the following relationships of the pectoralis minor is correct?

(A) The lateral cord of the brachial plexus lies lateral to the muscle
(B) The clavipectoral triangle lies lateral to the muscle
(C) The anterior axillary lymph nodes lie along the medial border of the muscle
(D) The lateral wall of the axillary fossa includes the muscle
(E) The second part of the axillary artery lies deep to the muscle

Answer 1

Option (E).

Step-by-step explanation:

Pectoralis minor muscles is a thin and flat muscle that present underneath the pectoralis major muscles. The neighboring structures of chest and axillary regions can be identified by the pectoralis minor muscle.

The second part of the axillary artery lies deep into the muscles. This divides into three parts medial, lateral and deep. The muscle is originated from the lateral to the coastal cartilage.

Thus, the correct answer is option (E).