chapter 4

goes from right side (heart wise) to left
deoxy to oxy
pick up oxygen in the capilliaries

get a colt in you leg it travels up the deoxy side of heart and gets stuck there that cause the right side to work harder which can stretch it out

equal to the systematic circuit
blood to only the lungs
pressure very low
25/8

muscles dont have smooth muscles and arent very rigid they stretch and accomdate a lot of blood flow and keeps work of the right heart as small as possible

pressure 120/80
everything but lungs
cardic output same as pulmonary

surrounded by gas
have a transmural pressure
at rest: good blood flow
inhale: alveolar inflation stecthes capilliaries (increase transmural pressure) so blood flow slows

as lung expands these larger blood vessels are pulled open by radical traction of the elastic lung parenchyma that surrounds them
when lung expands so do the supply vessels
why? have more resistance to them
eposed to a pressure less than alveolar and apre pulled open by the radical traction of the surrounding parenchyma

(input pressure-output pressure)lood flow

is very small but can become even smaller as the presure within the vessels rsies
this pressure can be artieal or venous

recriuctment
distension
both work to keep pulmoary pressure LOW

recuritument
will open more pathways aka more blood vessels
help to disparse the pressure keeping it low

distention
as pressure inside to rise even more then we get the blood vessels to strecth out
again helps keep presssure low

rest tidal volume
so optimzing blood flow
intersection between cap compression effect and supply dilation effect

cap compression increase
supply dilation effect decrease