This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Axillary aery is divided into 3 pas. Which of the following muscle divides axillary aery into 3 pas? 
Select and explain. 
A. Teres major, B. Teres minor, C. Pectoralis major, D. Pectoralis minor
D: Pectoralis minor
Answer: D: Pectoralis minor 
Explanation: Axillary aery is divided into 3 pas by pectoralis minor muscle. Axillary aery extends from the outer border of the first rib to inferior border of teres major muscle where it becomes the brachial aery. Branches of the axillary aery: First pa: Superior thoracic aery Second pa: Thoracoacromial aery Lateral thoracic aery Third pa: Subscapular aery Anterior humeral circumflex aery Posterior humeral circumflex aery