This MedLibrary.org supplementary page on Body-stalk is provided directly from the open source Wikipedia as a service to our readers. Please see the note below on authorship of this content, as well as the Wikipedia usage guidelines. To search for other content from our encyclopedia supplement, please use the form below:
Related Sponsors
| Body-stalk | ||
|---|---|---|
 |
||
| Diagram showing the expansion of amnion and delimitation of the umbilicus. | ||
 |
||
| Section through the embryo. | ||
| Gray's | subject #10 53 | |
The caudal end of the embryo is at first connected to the chorion by a band of mesoderm called the body-stalk, but with the formation of the caudal fold the body-stalk assumes a ventral position; a diverticulum of the yolk-sac extends into the tail fold and is termed the hind-gut.
The function of the body-stalk is later replaced by the umbilical cord.
Additional images
 Human embryo—length, 2 mm. Dorsal view, with the amnion laid open. X 30. |
 Human embryo of 2.6 mm. |
 Diagram showing later stage of allantoic development with commencing constriction of the yolk-sac. |
 Model of human embryo 1.3 mm. long. |
 Section through ovum imbedded in the uterine decidua. |
 Embryo between eighteen and twenty-one days. |
 Human embryo about fifteen days old. Brain and heart represented from right side. Digestive tube and yolk sac in median section. |
External links
- Swiss embryology (from UL, UB, and UF) hdisqueembry/triderm0
 |
This developmental biology article is a stub. You can help Wikipedia by expanding it. |
Wikipedia content modification information:
- This page was last modified on 6 August 2007, at 13:02.
Wikipedia Authorship and Review
Wikipedia content provided here is not reviewed directly by MedLibrary.org. Wikipedia content is authored by an open community of volunteers and is not produced by or in any way affiliated with MedLibrary.org.
Wikipedia Usage Guidelines
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article on "Body-stalk".
The URL for this specific entry is:
All Wikipedia text is available under the terms of the GNU Free Documentation License. (See Copyrights for details). Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc.