Cleavage Stage, Ovum [stadium rýhování vajíčka]
topical
23
- Terms
-
blastogeneze (embryologie)
ovum - stadium rýhování
rýhování vajíčka
rýhování zygoty
-
Segmentation Stage, Ovum
Persistent link
https://www.medvik.cz/link/D002970
Definition
The earliest developmental stage of a fertilized ovum (ZYGOTE) during which there are several mitotic divisions within the ZONA PELLUCIDA. Each cleavage or segmentation yields two BLASTOMERES of about half size of the parent cell. This cleavage stage generally covers the period up to 16-cell MORULA.
- DUI
- D002970 MeSH Browser
- CUI
- M0004547
- Previous indexing
- Cell Division (1966-1979); Zygote (1975-1979); Mitosis (1968-1979); Ovum (1966-1979)
- History note
- 80
- Public note
- 80
Allowable subheadings
- CH
- chemistry 1
- CL
- classification 0
- CY
- cytology 6
- DE
- drug effects 4
- EN
- enzymology 0
- IM
- immunology 0
- ME
- metabolism 4
- MI
- microbiology 0
- PS
- parasitology 0
- PA
- pathology 0
- PH
- physiology 2
- RE
- radiation effects 0
- TR
- transplantation 0
- UL
- ultrastructure 3
- VI
- virology 0
...
Occurrences in Medvik records
A
Anatomy
A16.216
Ectodermal Placodes
A16.551
Gubernaculum
A16.675
Organizers, Embryonic
A16.835
Pronephros