| A | B |
| vein | carries blood to the heart |
| brain | control center of the nervous system |
| organ | formed from tissues of different kinds working together |
| cardiac muscle | heart muscle |
| spinal cord | connects nerves to your brain |
| esophagus | tube that goes from your mouth to your stomach |
| nerves | groups of neurons that pass along information |
| stomach | organ where food is liquified |
| small intestine | food is digested the most here and taken into the body |
| neurons | nerve cells |
| large intestine | water is removed from digested food here |
| tissue | cells of the same type form this |
| smooth muscle | muscle found in the walls of your organs (stomach) |
| capillary | smallest blood vessel |
| striated muscle | muscle in your arms and legs |
| lungs | organs that take oxygen into your body |
| heart | organ that pumps blood throughout your body |
| artery | carries blood away from the heart |