Physiology lecture 9

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Created by: willmiddleham
Created on: 03-04-15 15:08

What happens to resistance to flow and blood flow during vasodilation?

Resistance to flow DECREASES, blood flow INCREASES

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What happens to resistance to flow and blood flow during vasoconstriction?

Resistance to flow INCREASES, blood flow DECREASES

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Metabolic control of vasodilators

Increase CO2, H+, K+, temp, Osmolarity

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Metabolic control of vasoconstrictors

Decrease O2

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Describe auto regulation of blood flow

Increase flow as a result of INCREASE blood pressure --> results in stretch of smooth muscle (Ca2+ influx) --> Myogenic vasoconstriction in response to pressure induced stretch

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Hormonal vasoconstrictors

Angiotensin, serotonin, adrenaline (a1), vasopressin

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Hormonal vasodilators

Histamine, kinins, adenosine, nitric oxide, adrenaline (B2)

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Neural vasoconstrictor

Sympathetic a1 receptors

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Neural vasodilators

Sympathetic cholinergic ACh, Parasympathetic cholinergic ACh

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Other cards in this set

Card 2

Front

What happens to resistance to flow and blood flow during vasoconstriction?

Back

Resistance to flow INCREASES, blood flow DECREASES

Card 3

Front

Metabolic control of vasodilators

Back

Card 4

Front

Metabolic control of vasoconstrictors

Back

Card 5

Front

Describe auto regulation of blood flow

Back

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Physiology lecture 9