[Campbell Biology P.985] What is the primary function of erythropoietin EPO , and how is its... | Practice Question

What is the primary function of erythropoietin EPO , and how is its production regulated in the body?

  • A: To stimulate lymphocyte production; regulated by bone marrow activity.
  • B: To increase oxygen-carrying capacity by stimulating erythrocyte generation; regulated by blood O2 levels sensed by kidneys.
  • C: To prevent blood clotting; regulated by platelet count.
  • D: To repair damaged blood vessels; regulated by blood pressure.

Explanation

The text states that if O2 level falls, kidneys synthesize and secrete erythropoietin EPO , which stimulates the generation of more erythrocytes to increase oxygen-carrying capacity. Thus, EPO production is regulated by blood O2 levels sensed by the kidneys, and its function is to stimulate erythrocyte generation.