Erythropoietin (EPO) is a hormone secreted by the kidney that promotes the production of red blood...

Erythropoietin (EPO) is a hormone secreted by the kidney that promotes the production of red blood cells. EPO works in a simple endocrine reflex and is secreted by the kidney. If the sympathetic nervous system were overactive for a long period of time, EPO levels would

Select one:

a. Fall

b. Rise

Solutions

Expert Solution

Answer :

Option B (Rise)

Explanation: Erythropoietin (EPO) is a hormone which gets released from the kidneys and the function of this hormone is to help trigger and promote the production of the red blood cells so as to carry sufficient amount of oxygen to the distant tissues.

Besides, EPO is also known to be a potent vasoconstrictor and is known to constrict the lumen of the blood vessels so as to permit the movement of huge amount of blood through it.

Under the conditions of hypoxia (that is deficiency of oxygen); the hormone EPO stimulates the kidneys to enhance the production of RBCs so as to facilitate the oxygen needs within the human body.

The Sympathetic nervous system is known to influence various organs within the human body. They are known to have an impact over the heart by increasing the blood pressure and also over the blood vessels by causing their constriction. Thus in these conditions, the body experiences a shortage in oxygen supply. Therefore, EPO would need to act continuously by stimulating the production of RBCs and also by causing the vasoconstriction for a prolonged time.

Sydney Mullin answered 10 months ago

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