The vascular shunt mechanism

Question 1

whats is redistrubuted

what is the vascular shunt system

Answer 1

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

Question 2

percentages

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

Answer 2

muscles-20%
organs -80%

Question 3

percentages

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

Answer 3

muscles-80%
VITAL organs-20%

Question 4

blood flow,

what is the function of precapillary sphincteres

Answer 4

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

Question 5

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

Answer 5

they dilate (open)
they constrict (close)

Question 6

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

Answer 6

vasconstrict (get smaller)
decrease

Question 7

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

Answer 7

vascodilates
increases