This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper limb : Miscellaneous, Subject name: Anatomy
Aery forming anastomosis around the surgical neck of humerus is a branch of:- 
Select and explain. 
A. 1st pa of axillary aery, B. 2nd pa of axillary aery, C. 3rd pa of axillary aery, D. Subclan aery
C: 3rd pa of axillary aery
Answer: C: 3rd pa of axillary aery 
Explanation: Aeries forming anastomosis around the surgical neck of humerus are anterior circumflex humeral aeries posterior circumflex humeral aeries Both are branches of 3rd pa of axillary aery.