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15 Cards in this Set
- Front
- Back
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What capillaries generally remain open at all times? |
Brain capillaries |
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What are capillaries controlled by? |
precapillary sphincter muscles |
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What are capillaries the site of? |
Fluid and gas exchange between blood and body cells |
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What is a bruise? |
Ruptured capillaries |
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Blood in the capillaries flows into _________ |
Venules |
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What do capillaries provide surrounding cells with? |
oxygen, glucose, and amino acids. |
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Where does the exchange occur? |
Between blood vessels and surrounding extracellular fluids |
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How is oxygen, CO2, and water transported? |
Through diffusion and osmosis |
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How are proteins and other large particles transported? |
Through endo/exocytosis |
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What is filtration? |
Pressure in the arterial end of capillaries. Arterial capillaries have higher pressure than ECF, water and minerals will diffuse/osmosis out of the capillaries into the ECF |
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What is the net movement of water, minerals and proteins |
From the capillaries into the ECF space |
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True or false? More fluid is pushed out at the arterial end than is reabsorbed at the venous end |
True |
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What is absorption? |
Pressure at the venous end of the capillaries, Proteins in the blood create an area of high solute concentration relative to surrounding ECP, water/minerals move back into the capillaries on the venous side |
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What are histamines? |
Produced by circulating white blood cells, histamines make capillaries more permeable |
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What do histamines do? |
Cause less water to be absorbed into capillaries and tissues swell, can put you into anaphylactic shock |
