General Animals Flashcards
multicellular stage produced by cleavage; cells surround a cavity
blastula
cavity inside blastula
blastocoel
process where one end of the blastula folds inward and expands to fill blastocoel
gastrulation
pore formed by gastrulation
blastopore
pouch formed by gastrulation
archenteron
future of archenteron lining
endoderm
future of blastula lining
ectoderm
future of blastocoel filling
mesoderm
top side
dorsal side
bottom side
ventral side
front end
Anterior
back end
Posterior
gives rise to the lining of the digestive tract (or cavity) and to the lining of organs such as the liver and lungs of vertebrates.
endoderm
germ layer gives rise to the outer covering of the animal and, in some phyla, to the central nervous system
ectoderm
have radial cleavage
deuterostomes
have spiral cleavage
protostomes
have determinate cleavage
protostomes
have indeterminate cleavage
deuterostomes
forms the muscles and most other organs between the digestive tract and the outer covering of the animal
mesoderm
has coelom form from splits in the mesoderm
protostomes
has coelom form from outpockets of the archenteron
deuterostomes
a group whose members share key biological features
grade
clade of animals with tissues
eumetazoa
crown of ciliated tentacles that function in feeding
lophophore
developmental stage in some lophotrochozoans
trochophore larva
basal bilaterans phylum
acoela
