This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pectoral Region, Axilla & Brachial Plexus, Subject name: Anatomy
Anterior axillary fold is due to which muscle - 
Select and explain. 
A. Pectoralis major, B. Pectoralis minor, C. Subscapularis, D. Teres major
A: Pectoralis major
Answer: A: Pectoralis major 
Explanation: Ans. is 'a' i.e., Pectoralis major o Anterior axillary fold is rounded in shaped and is formed by pectoralis major (lower border),o Posterior axillary fold is formed by teres major and latisimus dorsi.