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Which of the following might trigger erythropoiesis?
- a)Increased tissue demand for O2
- b)Decreased tissue demand for O2
- c)An increased number of RBCs
- d)Moving from a high altitude to a lower altitude
Correct answer is option 'A'. Can you explain this answer?
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Which of the following might trigger erythropoiesis?a) ...
Erythropoiesis is the process of production of red blood cells (RBCs) in the body. It is regulated by a hormone called erythropoietin (EPO) which is produced by the kidneys and liver.
Trigger for erythropoiesis:
Increased tissue demand for O2
Explanation:
When the body's tissues require more oxygen, such as during exercise or in high altitude environments, the level of oxygen in the blood decreases. This triggers the release of EPO from the kidneys and liver, which stimulates the bone marrow to produce more RBCs. These newly produced RBCs contain hemoglobin, which binds with oxygen and transports it to the tissues that need it. As a result, the increased production of RBCs helps to meet the increased demand for oxygen in the body's tissues.
Other options:
Decreased tissue demand for O2: This would not trigger erythropoiesis as there is no need for an increase in oxygen-carrying capacity.
An increased number of RBCs: This is not a trigger for erythropoiesis, but rather a result of increased EPO production and RBC production.
Moving from a high altitude to a lower altitude: This may decrease the body's demand for oxygen, but it would not trigger erythropoiesis as the body's oxygen-carrying capacity is already sufficient.
Trigger for erythropoiesis:
Increased tissue demand for O2
Explanation:
When the body's tissues require more oxygen, such as during exercise or in high altitude environments, the level of oxygen in the blood decreases. This triggers the release of EPO from the kidneys and liver, which stimulates the bone marrow to produce more RBCs. These newly produced RBCs contain hemoglobin, which binds with oxygen and transports it to the tissues that need it. As a result, the increased production of RBCs helps to meet the increased demand for oxygen in the body's tissues.
Other options:
Decreased tissue demand for O2: This would not trigger erythropoiesis as there is no need for an increase in oxygen-carrying capacity.
An increased number of RBCs: This is not a trigger for erythropoiesis, but rather a result of increased EPO production and RBC production.
Moving from a high altitude to a lower altitude: This may decrease the body's demand for oxygen, but it would not trigger erythropoiesis as the body's oxygen-carrying capacity is already sufficient.
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Which of the following might trigger erythropoiesis?a) ...
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Which of the following might trigger erythropoiesis?a) Increased tissue demand for O2 b) Decreased tissue demand for O2 c) An increased number of RBCs d) Moving from a high altitude to a lower altitude Correct answer is option 'A'. Can you explain this answer?
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