(lecture) Respiratory Flashcards
T/F Lung capacities are the sum of lung volumes.
TRUE
T/F Slow deep breathing or rapid shallow breathing strongly affects alveolar ventilation
FALSE
T/F Normally, the intrapleural pressure is always more negative than the atmospheric pressure
TRUE
Expiration happens
when inspiratory muscles relax
Inspiration is primarily an _______ process dependent on activation of ____ muscle.
active, skeletal
This is a muscle associated with inspiration
diaphragm
Lung resistance is
increased in asthmatics suffering from an attack
Surfactant can be
deficient in babies born prematurely > 1 mos.
Emphysema decreases
elasticity
Surface tension
is created by water
T/F lung compliance is less than a toy balloon
FALSe
T/F Compliance decreases in emphysema
TRUE
T/F Compliance is determined by lung structure and surface tension
TRUE
Air flows out of the lung when the intrapulmonary pressure is _____ then the atmospheric pressure
greater than
With lung expansion, the intrapulmonary pressure ______ atmospheric pressure.
falls below
During expiration the alveolar pressure is ____ than the atmospheric pressure.
greater
During inspiration, the intrapulmonary pressure is ____ than the atmospheric pressure.
less
At rest, the intrapleural pressure is always _______ than the atmospheric pressure.
less
At rest, the intrapulmonary pressure is always ______ the atmospheric pressure.
equal to
T/F The intrapulmonary pressure and alveolar pressure mean the same thing.
TRUE
Which cell type is important for secreting surfactant?
Type 2 alveolar
Surfactant is important for _____.
Decreasing surface tension of water
What is not part of the conducting zone?
alveolus
