The __________ are air sacs where gas exchange occurs.
A) larynx
B) alveoli
C) bronchi
D) trachea
Correct Answer:
Verified
Q34: The drop in pressure in the alveoli
Q35: The pressure that forms between the two
Q36: Which serous membrane lines the thoracic cavity?
A)Visceral
Q37: An alveolar sac is made of
A)simple squamous
Q38: What is the purpose of surfactant that
Q40: Which muscles contract for a forced expiration?
A)External
Q41: Average tidal volume is approximately
A)1500 mL.
B)2900 mL.
C)1000
Q42: What principle causes the exchange of oxygen
Q43: Total lung volume is approximately 5800 mLs.
Q44: A secondary respiratory center is found in
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