alleryStart learning →Approximately how many erythrocytes per microliter of blood do adult males and females have?
A5.4 million in females, 4.8 million in males
B5.4 million in males, 4.8 million in females
C7.0 million in males, 5.0 million in females
D4.4 million in males, 6.0 million in females
Answer & Solution
Correct answer: B. 5.4 million in males, 4.8 million in females
1. Males have about 5.4 million erythrocytes per microliter of blood.
2. Females have approximately 4.8 million per microliter.
3. The male figure is the higher of the two, which is consistent with the higher male hematocrit range of 42 to 52.
4. The option reversing the two sexes is the trap and can be caught by cross checking against the hematocrit ranges.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 18 "The Cardiovascular System: Blood", section 18.3 Erythrocytes_
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