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 statements are true for metaphysis of bone, EXCEPT: \nSelect and explain. \nA. It has greatest growth activity, B. It is the strongest pa of bone, C. It is the most vascular pa of bone, D. It is the region ouring hematogenous spread of infection', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Metaphysis is the pa of the diaphysis, towards the epiphysis, from where the ossification spreads rapidly. In this area, the vessels form hair-pin-bends, so the circulation becomes sluggish. This stasis of blood resulting from the hair-pin-bend arrangement is responsible for bacteria to settle and thus the common site for osteomyelitis. It is the area of active bone formation and is therefore richly supplied by the blood.', 'role': 'assistant'}]