Blastopore
You don't need to be Editor-In-Chief to add or edit content to WikiDoc. You can begin to add to or edit text on this WikiDoc page by clicking on the edit button at the top of this page. Next enter or edit the information that you would like to appear here. Once you are done editing, scroll down and click the Save page button at the bottom of the page.
| Blastopore | ||
|---|---|---|
| Gray's | subject #6 47 | |
| Dorlands/Elsevier | b_14/12188030 | |
A blastopore is an opening into the archenteron during the embryonic stages of an organism. The distinction between protostomes and deuterostomes is based on the direction in which the mouth (stoma) develops in relation to the blastopore. Protostome derives from the Greek word protostoma meaning "first mouth"(πρώτος + στόμα) whereas Deuterostome's etymology is "second mouth" from the words second and mouth (δεύτερος + στόμα).
The major distinctions between deuterostomes and protostomes are found in embryonic development:
- Mouth/anus
- Cleavage
- Protostomes have what is known as spiral cleavage which is determinate, this meaning that the fate of the cells is determined as they are formed.
- Deuterostomes have what is known as radial cleavage that is indeterminate.
External links
- Blastopore at eMedicine Dictionary
 | This developmental biology article is a stub. You can help Wikipedia by expanding it. |
