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7 Cards in this Set

  • Front
  • Back
How is resistance changed?
FAIR

Flow autoregulation

Active hyperaemia

injury

Reactive hyperaemia
Increased metabolism is associated with?
Increased blood flow
Active hyperaemia and what causes?
Increase in co2, Adenosine, K+, Prostaglandins

Decrease in o2 & pH

--> vasodilation
increased flow thus does what?
removes metabolite dilator
What is reactive hyperaemia?
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.
Injury?
substances produced on inflammation cause vasodilation therefore increased blood flow.
Sheer stress equation?
SS = Viscocity X velocity/distance from surface