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ventilation
air moving into lungs
respiration
process of O2 going though the capillary beds and exchanging nutrients, O2 in and CO2 out
Patm
760 mmHg
Palveoli when not inhaling/exhaling
760mmHg
Palveoli when inhaling
755 mmHg
Palveoli when exhaling
765 mmHg
Pleural cavity
always 5 mmHg below Palveoli to keep the lungs stuck to chest wall
Passive ventilation
increase in volume=decrease in pressure= air comes in
passive respiration
decrease in volume=increase in pressure=air comes out
Boyles law
P1V1=P2V2. says that if volume changes, pressure changes as well
daltons law
Patm x % pressure = partial pressure of gas
tidal volume
500 mL. how much air can you take in with one breath
expiratory reserve volume
all the extra air you can exhale
inspiratory reserve volume
all the extra air you can inhale
residual volume
the volume that keeps your lungs inflated
percent of N2 and O2 in air
79% N2 and 21% O2