| A | B |
|---|
| absorption | Passage of materials into and out of the bloodstream. |
| active immunity | Immunity when the body makes its own antibodies. |
| AIDS | A virus that destroys the body's immune system. |
| anemia | When the blood does not have enough hemoglobin. |
| arteries | Blood vessels that carry blood away from the heart. |
| arterioles | Tiny arteries. |
| atria | The upper chambers of the heart. |
| blood | Medium that transports materials throughout the body. |
| blood pressure | Pressure in the arteries caused by the pumping action of the heart. |
| capillaries | The smallest blood vessels. |
| circulation | The distribution of materials to all parts of the body. |
| coronary arteries | Arteries located in the heart. |
| coronary thrombosis | A type of heart attack caused by a blockage. |
| heart | A muscular, four-chambered organ. |
| hemoglobin | The iron rich pigment of the blood. |
| immunity | resist certain disease causing organisms |
| leukemia | Cancer in which the bone marrow makes too many WBC. |
| lymph | Surrounds the body cells as intercellular fluid. |
| passive immunity | Immunity caused by an injection of antibodies into the body. |
| pathogens | Disease producing organisms. |
| pericardium | The membrane that covers the heart. |
| plasma | The straw colored, nonliving part of the blood. |
| platelets | Small blood cells involved in blood clotting. |
| red blood cells | Blood cells that are produced by bone marrow. They carry oxygen to the body cells. |
| transport | The process of absorption and circulation of materials. |
| vaccination | An injection of a dead or weakened form of a disease causing microorganism. |
| veins | Blood vessels that transport blood back to the heart. |
| ventricles | Thick walled chambers of the heart that pump blood into arteries. |
| white blood cells | Blood cells that fight infection. |
