| A | B |
| setae | hairs that help worm move |
| esophagus | passage that connects mouth to crop |
| aortic arches | pumps blood to body |
| crop | stores food; connects mouth to gizzard |
| gizzard | grinds food; connects crop to intestines |
| intestines | connects gizzard to anus |
| invertebrate | animal without a backbone |
| annelids | invertebrates with tube like bodies divided into segements |
| earthworm | annelid example |
| skin | exchange of carbon dioxide and oxygen |