click below
click below
Normal Size Small Size show me how
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 |