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
[{'content': 'All of the following structures forms the border of Quadrangular space, EXCEPT: \nSelect and explain. \nA. Teres major, B. Teres minor, C. Pectoralis minor, D. Long head of the triceps brachii muscle', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Structures forming the borders of Quadrangular space are teres major and teres minor muscles, long head of the triceps brachii muscle, and the humerus. Contents of this space are: axillary nerve and the posterior circumflex humeral aery. Structures forming the border of triangular space are:Teres major and teres minor muscles and the long head of the triceps brachii muscle.Its contents is Circumflex scapular aery.Ref: Moon D.A., Foreman K.B., Albeine K.H. (2011). Chapter 30. Shoulder and Axilla.', 'role': 'assistant'}]