PHSI2005 Final: CV physiology

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At the end of this lecture you should understand: the general circuitry of the cardiovascular system. Components of the cardiovascular system: pump (heart, blood vessels (arteries, arterioles, capillaries, venules, veins, blood. Two circuits (cid:120) systemic circulation left side of the heart. Produces a greater force of contraction resulting in higher pressure (cid:120) pulmonary circulation right side of the heart. At lower pressure, around 1/3 of the pressure in systemic circulation. Features (cid:120) high elasticity and smooth muscle (cid:120) delivers the pulsatile blood from the heart to the arterioles (cid:120) (cid:120) capable of changing its diameter (and hence resistance) the most in the. Exchange (cid:120) very thin walls for exchange body. Large diameter, distensible, capacity to store lots of blood (cid:120) (cid:120) ~ 60% of blood is stored in the veins, while ~ 25% is in the arteriole side. 55: the relationships between flow, resistance and pressure as related to the cardiovascular system.

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