| A | B |
|---|
| respiratory system | brings oxygen into the body |
| circulatory system | moves blood through the body |
| skeletal system | suports the body and helps it move |
| digestive system | breaks down food |
| nervous system | "master control" system |
| blood vessels | part of the circulatory system |
| lungs | part of the respiratory system |
| stomach | part of the digestive system |
| brain | part of the nervous system |
| vertebrate | animals with backbones |
| atria and ventricles | the chambers of the heart; there are 2 of each |
| mouth | where digestion begins |
| diaphragm | large muscle that helps us breathe |
| large intestines | remove solid wastes from the body |
