This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lower limb 1, Subject name: Anatomy
The blood supply to femoral head is mostly by 
Select and explain. 
A. Lateral circumflex femoral aery, B. Medial circumflex femoral aery, C. Ligamentum teres aery, D. Obturator aery
B: Medial circumflex femoral aery
Answer: B: Medial circumflex femoral aery 
Explanation: The blood supply of the Femoral Head is derived mainly from retinacular aeries which are the branches of Medial Circumflex Femoral Aery .