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CH 11 Cardio
Med Terms Cardiovascular
| Term | Definition |
|---|---|
| Gas that enters the blood through the lungs | oxygen |
| Smallest blood vessel | capillary |
| Relaxation phase of the heartbeat | diastole |
| Upper chamber of the heart | atrium |
| Gas released by body cells; travels via blood to the lungs where it is exhaled. | carbon dioxide |
| Small artery | arteriole |
| Inner lining of the heart | endocardium |
| Specialized muscle fibers connecting the upper and lower heart chambers; bundle of His | atrioventricular bundle |
| Contraction phase of the heartbeat | systole |
| Largest artery in the body | aorta |