| A | B |
| circulatory system | carries nutrients, oxygen, and substances to cells of body |
| blood | carrier of the circulatory system |
| plasma | liquid part of the blood |
| red blood cells | carry oxygen from lungs to body cells |
| white blood cells | help body to fight infection and disease |
| platelets | help the blood to clot |
| heart | pump of the circulatory system |
| blood vessels | hollow tubes that transport blood |
| veins | carry blood from body to heart |
| arteries | carry blood away from heart to body cells |
| capillaries | connect arteries and veins |
| sweating | removes waste through skin |
| urinating | removes waste through kidneys and bladder |
| diaphragm | muscle that moves when you inhale and exhale |
| inhaling | breathing in |
| exhaling | breathing out |