更多archenteron例句

1. The other part of the archenteron wall make the Allantois, the hind gut and the bladder.
2. The part of the archenteron that remains within the embryo proper begins in this third week to be moulded into the head-cavity.
3. While the above external changes take place the archenteron undergoes considerable modifications.
4. The archenteron always gives rise to outgrowths which form the peritoneal membrane and water-vascular systems.
5. All the free forms are nearly alike in their earliest stage after the formation of the archenteron.