Which substance greatly reduces the attractive forces among the water molecules lining the alveoli?
A) lysozyme
B) converting enzyme
C) mucus
D) surfactant
Correct Answer:
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Q40: Which of the following is most likely
Q43: Which of the following is most likely
Q45: The trachea is
A)"the problem" in asthma.
B)the site
Q46: The Hering-Breuer reflex
A) prevents overinflation of the
Q49: Atelectasis
A)decreases the surface area for gas exchange.
B)causes
Q49: Kussmaul respirations
A) cause hypoxemia.
B) increase PCO2.
C) are
Q50: Across which structure does most gas exchange
Q51: The epiglottis
A)is innervated by the phrenic nerve.
B)prevents
Q55: Laryngospasm is most likely to cause
A)emphysema.
B)pneumothorax.
C)acute respiratory
Q57: Which event occurs first?
A)The diaphragm contracts.
B)Air moves
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