The difference in the number of red blood cells between the sexes is due to the stimulating effect of estrogen on red blood cell formation.

Question

Quizplus · Accepted Answer

The difference in the number of red blood cells between the sexes is primarily due to the stimulating effect of testosterone, not estrogen, on red blood cell formation. Testosterone increases erythropoiesis (red blood cell production), leading to higher red blood cell counts in males compared to females.

The Difference in the Number of Red Blood Cells Between