This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Osteology of Lower Extremity, Subject name: Anatomy
Most important arterial blood supply of femoral head is: (PGI June 2008) 
Select and explain. 
A. Femoral artery, B. Obturator artery, C. Internal pudendal artery, D. Medial circumflex femoral artery.
D: Medial circumflex femoral artery.
Answer: D: Medial circumflex femoral artery. 
Explanation: Ans: D. Blood Supply of Femoral Head BDC 4th/ Vol.II 16 # Smaller medial part near fovea is supplied by medial epiphyseal artery derived from posterior division of obturator arteryQ and ascending br. of medial circumflex femoral artery. # Longer lateral part by lateral epiphyseal arteryQ which is derived from retinacularbr. medial circumflex femoral artery. Most important Artery supplying Femoral head- Medial circumflex femoral artery and lateral epiphyseal artery.