Blastula
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.
| Blastula | ||
|---|---|---|
| Blastulation. 1 - morula, 2 - blastula. | ||
| Days | 4 | |
| Dorlands/Elsevier | b_14/12188083 | |
The blastula is an early stage of embryonic development in animals. It is also called blastosphere. It is produced by cleavage of a fertilized ovum and consists of a spherical layer of around 128 cells surrounding a central fluid-filled cavity called the blastocoel. The blastula follows the morula and precedes the gastrula in the developmental sequence.
Research
A whitefish blastula is often used to help study the processes of mitosis in animal cells.[1] The blastula is prevented from multiplying during the nuclear-injection stage.
Formation of blastocyst
In mammals, blastulation leads to the formation of the blastocyst, which must not be confused with the blastula; even though they are similar in structure, their cells have different fates. The blastocyst consists of two primary cell lines:
- the inner cell mass, also known as the "embryoblast"
- the trophoblast
The former is the source of embryonic stem cells and gives rise to all later structures of the adult organism. The latter combines with the maternal endometrium to form the placenta in eutherian mammals.
References
- ↑ Whitefish Mitosis. Retrieved on 2007-10-11.
 | This developmental biology article is a stub. You can help Wikipedia by expanding it. |
lt:Blastulėsk:Blastula sr:Бластула
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
