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Zoological terms
Terms in relation to animals, such as mammals, birds, reptiles or fish.
Industry: Zoology
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Zoological terms
flagellum
Zoology; Zoological terms
(pl. flagella) Long whiplike organelle protruding from the surface of the cell that either propels the cell acting as a locomotory device, or moves fluids past the cell, becoming a feeding apparatus
gamete
Zoology; Zoological terms
(Gk. gamos, wife) A specialized sex cell such as an ovum (egg) or a sperm; is haploid. A male (sperm) and a female gamete (ovum) fuse and give rise to a diploid zygote, which develops into a new ...
ganglion
Zoology; Zoological terms
A distinct clump of nerve cells that acts like a primitive brain, found in the head region of many invertebrates, an aggregation of nerve cell bodies located outside the central nervous system
gastrula
Zoology; Zoological terms
The blastula is transformed into a gastrula by cell movements known as gastrulation
gastrulation
Zoology; Zoological terms
(“gut formation“) Movement of embryonic cells generates three cell layers - the ecto -, meso -, and endoderm - each layer in turn giving rise to specific body organs and tissue.
invagination
Zoology; Zoological terms
The vegetal hemisphere of the blastula grows inwards forming a pouchlike space, it opens to the exterior through the blastopore
epiboly (in theolecithal ova)
Zoology; Zoological terms
The large amount of yolk in the vegetal hemisphere makes inward growth of the blastomeres difficult; epiboly results in a gastrula with a blastopore at the vegetal pole and with a vestige of ...
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