bio unit 5 - protostome animals
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15 Terms
coel
cavity (usually fluid filled)
ontogeny
development of an individual
choanoflagellates
closest living relatives to animals
collagen
protein that holds tissues and organs together, only in animals
4 types of tissue in animals
connective tissue
epithelial tissue
muscle tissue
nervous tissue
connective tissue
holds tissues and organs together
epithelial tissue
covering on and in organs made of tightly packed cells
muscle tissue
cells made of protein fibers for contraction (movement), only in animals
nervous tissue
made of neurons that transmit signals coming from environment (response), only in animals
cleavage
mitosis without cell enlargement
blastula
hollow ball of cells
blastocoel
fluid filled space inside blastula
gastrulation
developmental process that happens in the blastula involving invagination/ infolding on one end of the blastula
archenteron
becomes digestive tube in mature animal
blastopore
entrance (hole) to archenteron that either becomes mouth or anus of the digestive tube
Note 
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