| pulp |
the soft, center part of a tooth. It contains nerves and blood vessels. [1/3 definitions] |
| pus |
a thick, white or yellow liquid that forms around infections and that contains white blood cells. |
| red |
the color of blood; the first color on the color spectrum. [1/2 definitions] |
| red blood cell |
a cell in the blood that carries oxygen to the body's tissues. |
| serum |
the thin, watery liquid that remains when the solid parts of blood have formed a clot. [1/2 definitions] |
| small intestine |
the narrow part of the intestine which connects the stomach and the large intestine. The small intestine digests food and absorbs nutrients into the blood. |
| spleen |
an organ near the stomach that stores blood. The spleen gets rid of old red blood cells, and makes certain kinds of white blood cells. |
| stroke |
a sudden sickness in the brain caused by the breaking or blocking of a blood vessel. A stroke can cause parts of the body to become numb. It can also cause death. [1/6 definitions] |
| T cell |
a type of white blood cell that defends the body against certain diseases. |
| tick2 |
a small animal that is related to the spider. Ticks attach themselves to people and other animals and suck their blood. Ticks are known to spread disease. |
| transfusion |
the transfer of blood from an outside source into the bloodstream of a person or animal. |
| vampire |
a creature in folk tales that is said to have died but come back to life. Vampires suck blood from people in order to stay among the living. [2 definitions] |
| vein |
a small vessel that carries blood toward the heart. [1/3 definitions] |
| ventricle |
either of the two lower compartments of the heart. Ventricles receive blood from the upper compartments, called atria, and pump it to the lungs and throughout the body. |
| vessel |
one of the small tubes that carry blood and other fluids throughout the body. [1/3 definitions] |
| white blood cell |
a small blood cell with no color that helps protect the body against infections and bacteria. |