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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 |