ACSM Personal Trainer

Category - Initial Client Consultation and Assessment

Which structure actually facilitates the exchange of gases?
  1. Lobules
  2. Primary bronchioles
  3. Secondary bronchioles
  4. Alveoli and alveolar ducts
Explanation
Answer: D - Alveoli and alveolar ducts actually facilitate the exchange of gases via a plentiful population of capillaries on their outer surfaces.
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