| A | B |
|---|
| oxygen | gas needed by every cell in body |
| lungs | organs where blood goes to pick up oxygen |
| food | combines with oxygen in cells to release energy |
| white blood cells | germ fighters |
| platelets | form plugs so blood can't escape |
| heart | pump that keeps blood moving |
| carbon dioxide | waste gas from cells that needs to get out of body |
| capillaries | blood vessels that connect arteries to veins |
| blood vessels | hollow tubes that carry blood |
| blood pressure | the pushing of blood against the walls of blood vessels |
| fat | eating too much of this causes high blood pressure |
| arteries | largest blood vessels |
| valves | a flap of tissue that opens and closes |
| exercising | makes your heart beat faster to carry more oxygen and food to cells |
| right side of heart | sends blood to lungs to get oxygen |
| left side of heart | sends blood with oxygen to every cell in body |
| your fist | your heart is about this big |
| plasma | liquid part of your blood |
| red blood cells | carry oxygen to cells |
| hemoglobin | protein that helps oxygen stick to RBC's |
