pulmonary stuff i don't know well Flashcards
1
Q
where does diffusive O2 transfer happen
A
across lungs and tissue
2
Q
where does convective O2 transfer happen
A
pulmonary and systemic circulation
3
Q
what type of ventilation do we measure in exercise
A
Ve
4
Q
how does gas exchange work
A
-alveoli provide surface for gas exchange
- at rest 250ml/min of O2 enters the blood and 200ml/in of Co2 diffuse back into the alveolus
5
Q
what does a decrease in partial pressure at the top of the cascade limit
A
diffusive/convective O2
transfer lower down in
the cascade
6
Q
what is the PO2 at the tissue
A
60 mmhg
7
Q
what is the PO2 at the lungs
A
60mmhg
8
Q
normal PaCO2
A
100mmHg
9
Q
bohr effect SAO2
A
SAO2 under Bohr effect with a PO2 of 70 = ~87%
10
Q
SAO2 under neutral conditions
A
PO2 of 70 = ~91%
