Concept information
Preferred term
Blastodisc
Type
-
mesh:Descriptor
Definition
- A small whitish spot on the surface of the EGG YOLK where cleavage begins. Upon fertilization the cytoplasm streams from the vegetal pole away from the yolk to the animal pole where cleavage will occur. This germinal area eventually flattens into a layer of cells (BLASTODERM) that covers the yolk completely.
Broader concept
Entry terms
- Germinal Area
- Germinal Disc
Allowable Qualifier(s)
- abnormalities (Qualifier)
- anatomy & histology (Qualifier)
- blood supply (Qualifier)
- chemistry (Qualifier)
- cytology (Qualifier)
- diagnostic imaging (Qualifier)
- drug effects (Qualifier)
- embryology (Qualifier)
- enzymology (Qualifier)
- immunology (Qualifier)
- injuries (Qualifier)
- innervation (Qualifier)
- metabolism (Qualifier)
- microbiology (Qualifier)
- parasitology (Qualifier)
- pathology (Qualifier)
- physiology (Qualifier)
- physiopathology (Qualifier)
- radiation effects (Qualifier)
- surgery (Qualifier)
- transplantation (Qualifier)
- ultrastructure (Qualifier)
- virology (Qualifier)
In other languages
-
French
-
Disque embryonnaire
-
Disque germinal
URI
http://data.loterre.fr/ark:/67375/JVR-HTWN62R0-9
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