HESI PN Exit Exam 2023 Related

Review HESI PN Exit Exam 2023 related questions and content

What is the primary function of hemoglobin in red blood cells?

  • A. To transport oxygen from the lungs to body tissues
  • B. To protect the body from infections
  • C. To help in blood clotting
  • D. To regulate body temperature
Correct Answer: A

Rationale: The primary function of hemoglobin in red blood cells is to transport oxygen from the lungs to body tissues and return carbon dioxide from the tissues to the lungs. Hemoglobin binds to oxygen in the lungs and releases it in the body's tissues. Choice B is incorrect because hemoglobin is not involved in protecting the body from infections. Choice C is incorrect because blood clotting is mainly facilitated by platelets and clotting factors, not hemoglobin. Choice D is incorrect because the regulation of body temperature is mainly controlled by processes like sweating and shivering, not by hemoglobin.