last Q 2

Question 1

O2 content of arterial supply

Answer 1

200 mL / L blood

Question 2

O2 content of venous supply

Answer 2

150 mL / L blood

Question 3

what mechanosm do we use in autoregulation?

Answer 3

Bayliss effect

dilating or constravting vessels with myogenic tone

Question 4

Laplack law

Answer 4

tension = pressure X radius

Question 5

mechanism of local controll includes

Answer 5

autoregulation
metabloic regulation
endothelial mediated

Question 6

which structures dont have sympathetic innervation at all so only local controll

Answer 6

precapillary spinchters

higher buils up of metabolic waste will cause vasodilation -> increased blood flow to wash this substrates

Question 7

functional hyperemia will happen when

Answer 7

if cell function increase -> metabolism increase -> metabolites increase ->vasodilation -> blood flow increase

Question 8

reactive hyperemia will happen when

Answer 8

increase in flow aftera a period of decreased blood flow

when flow is blocked, metabolites build up and cause vasodilation so after the flow returns much much biggerrrr

Question 9

how NO causes vasodilation?

Answer 9

cGMP increased will activate cGMP protein kinase that will lead to vasodilation

Question 10

humoral vasoconstrictors

Answer 10

endothelin

Ang-II