(4) PULMONARY CIRCULATION lecture Flashcards
pulmonay sirculation
pressue ?
resistance ?
lecture 5/27
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mean drop linearar threw intire circute
M is blood presure
linear decline is pressure in circulatoin
this are not partial pressure of gass there blunt pressures
Y- axis is blunt pressure
pulmondary circulatoin
bronchial circualtion
. pulumanry circulation comes for the right side of the heart. has artialized blood. (oxidized blood (gas exchange
brochial circulation comes out the left side of the heart
hypoxic pulmonary vasconstriction 1
hypoxic pulomanry vasoconstriction II
hypoxic pulmonary vasoconstriction what effect does it have on pulonnary resistance? cardiac work? consequences ?
cardiac work
distribution of blood flow
exersizing vs rest
in exersizing, improve cerculation up and odwn the lung
hdrostatic effect on blood flow. read bottom notes
just enough to get the blood to the top of lungs. slow weak . zone 1-not normal. blood pressure falls dramaticly.(hemorage) constribution of blood flow. no circulation.
zone 2-flow of blood is determined by arterial arvilar differance. intermittin flow. always some flow. arterial pressure is higher=blood will flow. if talveolar higher then no blood blow? RESSISTOR
zone 3-increase pressure, aveolar rises. inreased pressure in alivari. ex.wind instruments hitting a high note
zone 4 is at the bottom where the diaphram is
excersise and blood flow
excersise and blood flow O2
why does resistnace not increase in excersise and blood flow
4 liters a min in this diagrame is the noraml vaule 13 mm. of murcery. as cardiac output increases , pulmonary artial pressure increased. you dont want this cause is if rises then more fulid will come out of of the capillary. which is okay unless you have other issures
consequence of unaltered resistance
measurements of pulmonary Q.
use ficks equation
C=concentration. will be given this vaules.
answer is 4 litear in a minute
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water balance in the lungs
circulation of lung varies. poor at top greater at bottom..standing or sitting. dependent lung.
lay down, graventationly, lowest most, independednt lung, chest part has the poorest supplu of lung ventlatoin.
lay on left side same thing . left side has the grestest right side has the lowest.
