vasoregulation -bolz Flashcards
what is most problematic metabolic biproduct
CO2
where is high P system, and how much blood there
arteries - 23%
how does blood dist change in excercise
major increase to muscle, away from gut
3 important functions of RBC being too large for caps
- slows time
- increases surface contact
- little distance to walls
what is importance of small and medium arteries
bring P down before caps.
how do resistance arts. reg. P to caps.
constrict r to change resitance
what are adrenaline targets, where do they occur, and what do they do (2)
a-receptors - gut - vasoconstrict
B-receptors - muscle - dilate
what is step 1 of mygenic response
muscles signal need for more blood - dilates sector 1
what art. reaction to increase in P (2 steps)
- immediate swelling
2. hard contraction against P
what does adrenaline do to BP on its own
incr. BP
what do resistance arts. do in response to high BP
constrict to protect Caps.
what is main regulator of tone in resistance As
myogenic response
within what BP range will blood flow to brain be constant
60-170
what is sector 2s response to metabolic activity
descrease perfusion pressure
whats is sector 3’s response to sector 2
increase blood flow
