| A | B |
|---|
| arteries | blood vessels that carry blood AWAY from the heart |
| capillaries | tiny blood vessels that connect veins and arteries |
| veins | blood vessels that carry blood back to the heart |
| hematology | study of blood |
| pulse | the number of times your heart beats in one minute |
| atrium | the upper chamber of the heart that receives blood from the body or the lungs |
| ventricle | the lower chamber of the heart that pumps blood to the lungs or the body |
| blood vessels | network of tubes that carry blood throughout the body |
| red blood cells | part of the blood that carries oxygen to the cells and wastes away from cells |
| white blood cells | blood cells that fight infection |
| platelets | small blood cells that help in clotting |
| plasma | yellowish liquid that carries the blood cells to where they need to go in the body |
| fibrinogen | substance in the blood that forms a net to help in clotting |
| heart | organ in the circulatory system that pumps blood |
| valves | flaps of tissue in the heart that allow blood to travel in one direction |
| cell | basic unit of life |
| nucleus | part of the cell that controls all of the cells functions |
