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8 Cards in this Set
- Front
- Back
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Which contains the larger proportion of blood, arteries or veins?
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Veins, contain the highest proportion of the blood, the unstressed volume.
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What is Poiseuille's equation for resistance?
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R= 8Nl
______ 3.14(r4) R=resistance N=viscosity of blood l=length of blood vessel r=radius of blood vessel |
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Which component of the vascular system is the site of the highest resistance?
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The arterioles
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Resistance is regulated via the ANS. TRUE/FALSE
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TRUE
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On which arterioles are alpha-1 adrenergic receptors found?
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Skin
Renal circulation Splanchnic circulation |
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On which arterioles are beta-2 adrenergic receptors found?
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Skeletal muscle
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What is unique about the capillary bed system of the vasculature?
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It has the largest cross sectional area and surface area, which allows for the effecient exchange of nutrients water and gases.
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What is unique about the pulmonary vasculature compared to the systemic?
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Hypoxia causes vasoconstriction of the pulmonary vasculature. In most organs hypoxia causes vasodilation.
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