Question

At the site of gas exchange in the lungs, where does the oxygen move?

A. O2 moves from the alveoli to the white blood cells.
B. O2 moves from the white blood cells to the alveoli.
C. O2 moves from the alveoli to the red blood cells.
D. O2 moves from the red blood cells to the alveoli.

Answer 1

Answer:

C

Explanation:

Oxygen moves through our airway tract and goes down to the alveoli which are sacs for air to go in. Oxygen then moves through the capillaries and that's where Red blood cells pick up O2 and release CO2 to be expelled during exhalation.

Answer 2

Answer:

c

Explanation:

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