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Cardiovascular
Module 10
| Term | Definition |
|---|---|
| aorta | the largest artery in the body |
| capillary | the smallest vessel; materials pass to and from the bloodstream through the thin capillary walls |
| carbon dioxide | a waste gas that is released by body cells to, and from, the bloodstream through the thin capillary walls |
| coronary arteries | the blood vessels that branch from the aorta and carry oxygen-rich blood to the heart muscle |
| deoxygenated blood | blood that is low in oxygen |
| diastole | the relaxation phase of the heartbeat |
| systole | the contraction phase of the heartbeat |
| endocardium | the inner lining of the heart |
| pericardium | the sac-like membrane surrounding the heart |
| myocardium | the muscle layer of the heart |
| septum | a partition between the right and left sides of the heart |
| sphygmomanometer | an instrument used to measure blood pressure |
| valve | a structure in veins or the heart that opens and closes so that blood will flow in only one direction |
| vena cava | the largest vein in the body |