| A | B |
|---|
| Heart, arteries, veins and blood | The circulatory system is made of this. |
| Organ | Your heart is an |
| Muscle | The heart is made mostly of |
| Fist | Your heart is about the size of this |
| Less than a pound | Your heart weighs about this much |
| Chambers | The four "rooms" in your heart are called these. |
| Two | Your heart has this many pumps. |
| 9 Pints | This much blood flows through my circulatory system. |
| Red blood cells | Carry oxygen to the body cells |
| White blood cells | Protect the body against harmful bacteria that get into the body. |
| Plasma | Yellow, watery liquid that pushes blood through the blood stream. It brings food to body cells and collects waste products. |
| Platelets | Small, oval cells in the blood that work with blasma to stop bleeding. |
| Food and Oxygen | The blood carries this in the arteries. |
| Carbon Dioxide | The waste product the blood picks up from the cells. |
| Veins | The blood travels back to the heart by these. |
| Breathe Out | This is how the body gets rid of waste gas. |
