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40. Circulatory System

40. Circulatory System

40. Circulatory System / Gas Exchange / Problem 9

Why does the RBC count rise in people who live at high altitudes?

ANSWERS OPTIONS

A

Due to the high partial pressure of oxygen at high altitudes, more RBCs are required to supply oxygen to the body cells.

B

Due to the low partial pressure of oxygen at high altitudes, more RBCs are required to supply oxygen to the body cells.

C

Due to the low partial pressure of oxygen at high altitudes, more RBCs are required as the speed of blood circulation increases.

D

Due to the high partial pressure of oxygen at high altitudes, more RBCs are required as the speed of blood circulation increases.

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