The nurse educating a patient with anemia is describing the process of RBC production. When the patient's kidneys sense a low level of oxygen in circulating blood, what physiologic response is initiated?
A) Increased stem cell synthesis
B) Decreased respiratory rate
C) Arterial vasoconstriction
D) Increased production of erythropoietin
Ans: D
Feedback:
If the kidney detects low levels of oxygen, as occurs when fewer red cells are available to bind oxygen (i.e., anemia), erythropoietin levels increase. The body does not compensate with vasoconstriction, decreased respiration, or increased stem cell activity.
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