| A | B |
|---|
| heart | a muscle located near the middle of your chest that receives and pumps blood throughout your body |
| artria | chambers on top of the heart that fill with blood returning to the heart from the body and lungs |
| ventricles | chambers on the heart's bottom that squirt blood out to the body and lungs |
| circulatory system | made up of your heart, blood vessels, and blood |
| circulation | the movement of blood through the heart and around the body |
| blood vessels | tubes that move your blood through your body |
| arteries | blood vessels that carry blood away from the heart |
| veins | blood vessels that carry blood back to the heart |
| The blood's job | carry oxygen and nutrients to the body and remove wastes |
| plasma | mostly water, carries blood cells and platelets through the blood vessels |
| red blood cells | these give blood its red color; their job is to carry oxygen from the lungs to your body |
| white blood cells | blood cells that help fight infections and attack germs |
| platelets | this part of your blood stops you from bleeding |
