Cleavage Stage, Ovum
| Definition: |
The embryo in its earliest stage, lasting from the first mitotic division of the fertilized ovum (ZYGOTE) into two BLASTOMERES to the formation of the MORULA, a compact mass of blastomeres. |
| Notes: |
note category; "the embryo in its earliest stage" |
| Previously Indexed: |
Cell Division (1966-1979),Mitosis (1968-1979),Ovum (1966-1979),Zygote (1975-1979) |
Cleavage Stage, Ovum Categories.
 |
Blastula - An early non-mammalian embryo (EMBRYO, NONMAMMALIAN) that follows the MORULA stage. Blastula is usually a spherical structure containing a single layer of cells with a hollow cavity. |
|
Morula - The early embryo at the developmental stage in which the BLASTOMERES, resulting from repeated mitotic divisions of the fertilized ovum (ZYGOTE), form a compact cell mass. |
Cleavage Stage, Ovum Definitions and Terms
MedicalGlossary.org is designed as a free, browsable resource for all. The medical terms and definitions are not intended to replace medical informaion provided by licensed healthcare professionals. Please see a doctor if you need medical assistance. Don't see the medical term you were researching? Send us an e-mail from our "about us" page. We will do our best to research and classify new medical terms in a timely manner. Our current list of medical terms is over 26,000. Data sources include the U.S. National Library of Medicine, 2004 Medical Subject Headings.
|
