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CTaustin CTaustin
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6 years ago
Diffusion of respiratory gases takes place at the:
 
  a. alveolocapillary membrane.
  b. visceral pleurae.
  c. parietal pleurae.
  d. respiratory center.
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wrote...
6 years ago
ANS: A
Diffusion of respiratory gases takes place across the alveolocapillary membrane. The visceral and parietal pleurae are the linings of the lung; gas exchange does not occur here. The respiratory center is where impulses to the respiratory muscles are generated.
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