system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Flexion, adduction and medial rotation of arm is done by which muscle?
assistant
The correct answer is  Ans. B Pectoralis majorAnatomy of pectoralis major muscle:* Origin: Clavicle, sternum and costal cartilage 2nd - 6th ribs* Insertion: Lateral lip of intertubercular groove of humerus* Function: Flexion, adduction and medial rotation of arm