| A | B |
| mouth | opening through which food passes into the body |
| esophagus | food tube |
| lungs | organs for breathing |
| stomach | organ located between the esophagus and the small intestine |
| trachea | tube that lets air go from the nose and mouth into the chest |
| iris | the colored part of the eye |
| pupil | the hole through which light enters the eye |
| arteries | blood vessels that cary blood away from the heart |
| veins | blood vessels that carry blood to the heart |
| heart | organ in the chest that pumps blood throughout the body |
| nostril | openings to the nose |