which of the following adaptations typically occurs after spending three weeks or more at high altitude? select one: a. muscle mass increases due to reduced oxygen availability b. aerobic capacity increases by at least 35% c. red blood cell production increases d. plasma volume decreases by 70% e. red blood cell production decreases

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20-12-2022
Biology

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which of the following adaptations typically occurs after spending three weeks or more at high altitude? select one: a. muscle mass increases due to reduced oxygen availability b. aerobic capacity increases by at least 35% c. red blood cell production increases d. plasma volume decreases by 70% e. red blood cell production decreases

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tutorconsortium630 tutorconsortium630 · Answer 1 · 2022-12-23T11:22:49+01:00

(c) Red blood cell production increases. After staying at a high altitude for a few days to a week, acclimatization takes place. Lack of oxygen at high altitudes causes the kidney to secrete more erythropoietin, which in turn increases the number of circulating RBCs to reduce low haemoglobin saturation.

What are Red blood cells?

Red blood cells or RBCs are a type of blood cell that the bone marrow produces and is present in the blood. Haemoglobin, a protein found in red blood cells, transports oxygen from the lungs to every cell in the body.

What is Erythropoietin?

A hormone called erythropoietin is crucial for the production of red blood cells. Erythropoietin is produced by the liver and kidneys when the cells' oxygen levels are low. The hormone then encourages the production of red blood cells in the bone marrow. A small amount of erythropoietin typically circulates in the bloodstream since it aids in replenishing the body's natural blood reserves.

Hence, red blood cell production increases, because lack of oxygen at high altitudes causes the kidney to secrete more erythropoietin, which in turn increases the number of circulating RBCs to reduce low haemoglobin saturation.

To know more about erythropoietin, check out:

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