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anatomy 1
Term | Definition |
---|---|
what are the 7 characteristics of animals? | multicellular, no cell walls, embryonic development, nervous and muscle tissue, diploid, heterotrophs, motile |
what are the 3 types of body symmettry? | radial, bilateral, asymmetrical |
asymmetry animals | sponges |
radial symmetry animals | cnidarians |
blastula | a hollow ball produced by a fertilized egg dividing |
gastrula | when cells migrate inward |
blastopore | opening of the gastrula |
what are the 3 germ layers? | ectoderm, mesoderm, endoderm |
ectoderm produces what | skin and nervous system |
endoderm produces what | lining of the gut and gut organs |
mesoderm produces what | muscles, connective tissue, kidneys, reproductive organs |
aceoelomate | no body cavity |
pseudocoelomate | fake body cavity between meso and endo |
coelomate | body cavity within the mesoderm |
sac like gut | has one opening |
complete gut | has 2 openings |