(3) ALVEOLAR GAS EXCHANGE lecture

Question 1

diffusion

gases reach end of terminal broncli by what?

hases move to and with in alveoli by?

gases move across respiratory epitheliulm by?

ficks law?

Answer 1

fluid flow

diffusion

diffusion

Question 2

diffusion

Answer 2

.

Question 3

Answer 3

the more soluble a gas is the more it will diffues across

need ot worry about carbon dioxid and oxygen

Question 4

what are the limitations of diffusion?

DONT NOT UNDERSTAND THIS CHART

Answer 4

goes from 40 to 100 mucrey partal pressure

N2O- moves arcoss wall and combinds with hemoglobin, floats around freely

blood flow is prefusion

if there is no prefusion then there is no No2 transfered??

need explnation for this one

Oxgen- behaves normally as a perfusion limited gas

Question 5

diffusion capacity

Answer 5

.

Question 6

Answer 6

have mixed venus blood (PVo2) arriving at the cappilary

partial pressure of mixed venus blood oxygen at (37)

then goes up to alveolar gas Pco2 106mmhg

venus add mixure is the second to lasd row

Question 7

Answer 7

PO2 normal curve is at top

adnomral diffusion goes to right

then horrible diffusion is far right

at 25 you can still see the systems falures of diffusion

Question 8

2 ways you can expose lack of oxygen trasnfer

Answer 8

you can make them excerise or give them a hypoxic gas mixture

Question 9

diffuction capacity of CO carbon dioxid

Answer 9

diffusion is 20X faster then O2. 400mL

Question 10

diffusion capacity increases upon exersise due to

Answer 10

Question 11

artieralized at 40. 5 milimiter differance can drive the rate cuases of solubility

Answer 11

Question 12

effects of impaired diffustion: and major causes of hypoxemia

Answer 12