Author Question: The site of oxygen and carbon dioxide exchange is the A) alveoli. B) diaphragm. C) bronchi. ... (Read 120 times)

elizabeth18

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The site of oxygen and carbon dioxide exchange is the
 
  A) alveoli.
  B) diaphragm.
  C) bronchi.
  D) trachea.

Question 2

The principle function of the respiratory system is to take in ____ and to eliminate ____.
 
  A) leukocytes . . . oxygen
  B) oxygen . . . carbon dioxide
  C) oxygen . . . methane
  D) nitrogen . . . carbon dioxide and methane



nekcihc358

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Answer to Question 1

A

Answer to Question 2

B



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