The expected number of RBCs in a single drop, or microliter, of blood is _________ million in Men.

Correct answer: A. 4.5 to 6.2 million

  • A. 4.5 to 6.2 million
  • B. 3.4 to 6.8 million
  • C. 3.2 to 7.2 million
  • D. 4.0 to 5.2 million

Explanation

Adult men commonly have about 4.5–6.2 million red blood cells per microlitre of blood. The range is higher than the usual female range because androgens stimulate red-cell production.

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