vasculature

Question 1

resistance vessels

Answer 1

regulate BP and blood flow

Question 2

systemic perfusion pressure

Answer 2

difference between MAP and CVP

Question 3

transmural pressure

Answer 3

inner pressure minus outer pressure, pressure that distends the atria or ventricle, if pressure in atria is 0 and intrapleural pressure is -4mmH, transmural is 4. With inspiration pressure in atria drops to -2 and intrapelural to -8 so no intramural pressure is 6

Question 4

monroe kelly doctrine

Answer 4

cranium fixed volume so CPP and ICP must balance

Question 5

valsalver ratio

Answer 5

shortest RR in phase 2 (fastest HR): longest RR in phase 4 (slowest HR): >1.5

Question 6

square wave response

Answer 6

in valsalver get no increased HR in phase 2 and BP remains high. get no decreased HR in phase 4 and BP stays low

Question 7

mean systemic pressure

Answer 7

if asystole with no circulatory reflexes its the pressure ur left with that promotes venous return. When RAP so high that venous return ceases RAP = MSP

Question 8

windkessel

Answer 8

aorta potential energy in stretched walls in systole converted to kinetic energy in diasatole to maintaine constant flow

Question 9

calculation of blood volume

Answer 9

70ml/kg, 80-100ml/kg in newborn

Question 10

sum of local organ and tissue flow

Answer 10

cardiac output

Question 11

main blood reseviours

Answer 11

lungs, liver, skin. splanic and limbs less so