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7 Cards in this Set
- Front
- Back
How is resistance changed?
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FAIR
Flow autoregulation Active hyperaemia injury Reactive hyperaemia |
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Increased metabolism is associated with?
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Increased blood flow
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Active hyperaemia and what causes?
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Increase in co2, Adenosine, K+, Prostaglandins
Decrease in o2 & pH --> vasodilation |
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increased flow thus does what?
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removes metabolite dilator
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What is reactive hyperaemia?
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Blood flow is temporarily stopped.
Metabolites accumulate -> cause vasodilation (increased blood flow) following access again. Dependant on time of occlusion & whether muscle was exercised or not. |
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Injury?
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substances produced on inflammation cause vasodilation therefore increased blood flow.
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Sheer stress equation?
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SS = Viscocity X velocity/distance from surface
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