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25 Cards in this Set
- Front
- Back
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Ensuring the survival of all cells of the body at every moment and keeping the immediate environment of each cell at a composition appropriate for its normal function.
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Functions that the cardiovascular system is designed to do
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What is the limiting factor for cell survival?
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Oxygen availability
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How is oxygen generally supplied to the cell?
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Passive diffusion
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What process is the most used for ATP synthesis?
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Oxidative phosphorylation
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How do we keep the concentration of all the ISF contents relatively constant?
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By keeping blood flow through all the vessels maintained
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The CV system is said to be a ________ ___________ system.
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Fluid mechanical
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What are the three components of the CV system? (general terms from Prof)
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pump, pipes, (ph)fluid
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Why must circulating blood be brought close to the cells?
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Because passive diffusion works most efficiently over short distances
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There must be ___________ __________ __________ through the capillaries in tissue for oxygen delivery.
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Adequate blood flow
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Moving materials, moving heat, and transmitting force are three important functions of ???
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The CV system
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Blood pressure at the entrance to each organ is the _____ .
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same
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How can blood flow to each organ be controlled?
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independently
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If an organ needs more blood, it can open its own _______ .
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spigot
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Q must equal _________.
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C.O.
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Pressures in the C.V. system are measured relative to the __________ ___________.
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atmospheric pressure
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Pa = _______ mmHg
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100 mmHg higher than atmospheric pressure
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Pv = ________ mmHg
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0 mmHg higher than atmospheric pressure
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What property causes the huge drop of pressure from Pa to Pv?
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resistance
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Flow to these tissues exceed their metabolic needs.
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Lung, kidney, gut, skin
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Flow to these tissues match their metabolic needs. Essential.
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Heart, brain, muscle
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Blood reconditioners maintain the ISF _________ ________.
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Composition constant
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Lungs perform....
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Gas exhange
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Kidneys perform...
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Electrolyte composition, fluid balance
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Gut performs....
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Nutrient absorption
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Skin performs...
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Temperature regulation
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