Physiology lecture 9

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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

Preview of the front of card 3

Card 4

Front

Metabolic control of vasoconstrictors

Back

Preview of the front of card 4

Card 5

Front

Describe auto regulation of blood flow

Back

Preview of the front of card 5
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