The vascular shunt mechanism Flashcards

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1
Q

whats is redistrubuted

what is the vascular shunt system

A

where theres a redistribution of blood to where the oxygen and nutrients are needed most

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2
Q

percentages

when at rest how much blood goes to the muscles and organs

A

muscles-20%
organs -80%

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3
Q

percentages

during exersize how much blood goes to the muscles and the organs

A

muscles-80%
VITAL organs-20%

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4
Q

blood flow,

what is the function of precapillary sphincteres

A

they regulate blood flow by increasing and decreasing the blood flow in different areas

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5
Q

how do precapillary spincteres increase/ decrease blood flow in different areas

A

they dilate (open)
they constrict (close)

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6
Q

at the begining exersise the arterioles to the organs vaso……..
this allows blood flow to

A

vasconstrict (get smaller)
decrease

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7
Q

at the begining of exerises the arterioles to the mucles vasco……….
this then ……… the blood flow

A

vascodilates
increases

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