Mod2Q15 Flashcards
atmospheric pressure
pressure of the atmosphere generated by its weight; ~760mm Hg
intraoral pressure
pressure measured within the mouth
subglottal pressure
air pressure generated by the respiratory system below the level of the vocal folds
With vocal folds open, how do oral pressure, subglottal pressure, and alveolar pressure relate to one another?
all are equal
alveolar pressure
air pressure measured at the level of the alveolus in the lungs
intrapleural pressure
pressure measured within the pleural lining of the lungs
what is the relative value of intrapleural pressure?
negative compared to other respiratory cavaties
what happens to intrapleural pressure during inhalation?
it increases
how does atmospheric pressure relate to respiratory pressures?
the constant (zero) against which we compare respiratory pressures
during inhalation, what happens to alveolar pressure?
it increases
during expiration, what happens to alveolar pressure?
it decreases