[名词解释] 干细胞(stem)

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"] 永久性细胞(permanent cell) 不稳定细胞(labile cell) 骨髓间充质干细胞(marrow mesenchymal stem cell) 对耳颞神经正确的说法是() ["A．出腮腺分部于耳部","B．出腮腺至颞区","C．是上颔神经的分支","D．是面神经的分支","E．在腮腺浅面上行"] 干细胞(stem)