This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lower limb, Subject name: Anatomy
Aerial supply to the head and neck of femur is 
Select and explain. 
A. Lateral circumflex femoral aery, B. Medial circumflex femoral aery, C. Profunda femoris aery, D. External femoral aery
B: Medial circumflex femoral aery
Answer: B: Medial circumflex femoral aery 
Explanation: The medial circumflex femoral aery (internal circumflex aery, medial femoral circumflex aery) is an aery in the upper thigh that helps supply blood to the neck of the femur. Damage to the aery following a femoral neck fracture may lead to avascular necrosis (ischemic) of the femoral neck/head . Ref - BDC 6th edi vol 2 ; pg 13-15