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circularity system
| Term | Definition |
|---|---|
| veins | carries blood to the heart |
| arteries | carries blood away from the heart |
| plasma | composed of mainly water which as a transport medium for the cells and dissolved substances |
| open circulatory system | the heart pumps blood in vessels that are open ended |
| closed circulatory system | the blood remains in a continuous system of blood vessels |
| arterioles | smaller arteries |
| venules | smaller veins |
| pericardium | the thin protective layer around the heart wall |
| septum | wall that separates the left hand side from the right hand side of the heart |
| aorta | the large artery in your heart that pumps oxygenated blood through your body |
| pulmonary vein | pumps the deoxygenated blood back to the heart |