找考题网-背景图
单项选择题

胚内中胚层形成后,在脊索左右两侧,由内向外依次为()

A.间介中胚层、轴旁中胚层、侧中胚层
B.轴旁中胚层、间介中胚层、侧中胚层
C.轴旁中胚层、侧中胚层、间介中胚层
D.间介中胚层、侧中胚层、轴旁中胚层
E.侧中胚层、轴旁中胚层、间介中胚层