下列对舌下神经核的叙述正确的是() ["A．接受双侧皮质核束的支配","B．支配对侧的颏舌肌","C．受损时，伸舌偏向健侧","D．受损时，伸舌偏向患侧","E．以上都不对"]
胸痹与真心痛的不同点主要在于 ["病情程度不同","虚实属性不同","寒热病性不同","病程长短不同","好发年龄不同"]
骨折(fracture of bone)
造血干细胞(hematopietic stem cell)
枕外隆凸的内面是() ["A．直窦","B．窦汇","C．上矢状窦","D．下矢状窦","E．乙状窦"]
瘢痕组织(scar tissue)
