2.2 Gas Exchange Systems at Alveoli and Muscles Flashcards
1
Q
what is partial pressure
A
the pressure of an individual gas when it exists amongst a mixture of gases
2
Q
what is the amount of gases inspired at rest
A
oxygen - 21%
carbon dioxide - 0.03%
nitrogen - 79%
water vapour - varied
3
Q
what is the amount of gases expired at rest
A
oxygen - 16.4%
carbon dioxide - 4.0%
nitrogen - 79.6%
water vapour - saturated
4
Q
what is the amount of gases expired after exercise
A
oxygen - 14%
carbon dioxide - 6%
nitrogen - 79%
water vapour - saturated
5
Q
what draws oxygen to dissociate and diffuse into cells
A
myoglobin and mitochondrion
6
Q
what is partial pressure measure in
A
mm
