Erythropoietin administration results in an increase in VO2 max because:Group of answer choicesan increase in red cell mass enhances oxygen deliveryblood viscosity is increasedblood buffer capacity is enhanced
Question
Erythropoietin administration results in an increase in VO2 max because:Group of answer choicesan increase in red cell mass enhances oxygen deliveryblood viscosity is increasedblood buffer capacity is enhanced
Solution
Erythropoietin administration results in an increase in VO2 max primarily because an increase in red cell mass enhances oxygen delivery.
Here's the step-by-step explanation:
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Erythropoietin is a hormone produced by the kidneys that promotes the formation of red blood cells in the bone marrow.
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When erythropoietin is administered, it stimulates the production of more red blood cells.
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Red blood cells are responsible for carrying oxygen from the lungs to the rest of the body.
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Therefore, an increase in red blood cell mass means that more oxygen can be delivered to the muscles during exercise.
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VO2 max is a measure of the maximum volume of oxygen that an individual can use during intense exercise. It's a key indicator of a person's aerobic endurance.
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So, by increasing the body's ability to deliver oxygen to the muscles, erythropoietin administration can result in an increase in VO2 max.
While it's true that an increase in red blood cells can also increase blood viscosity, this is generally not the primary reason for the increase in VO2 max. Increased blood viscosity can actually make it harder for the heart to pump blood, which could potentially offset some of the benefits of increased oxygen delivery.
As for blood buffer capacity, erythropoietin doesn't directly enhance this. Blood buffer capacity refers to the ability of the blood to maintain a stable pH, and it's primarily regulated by the bicarbonate buffering system, not red blood cells.
Similar Questions
How does erythropoietin (EPO) regulate red blood cell production?Multiple choice question.through negative feedbackby regulating the amount of hemoglobin producedthrough positive feedbackby removing excess red blood cells that enter the kidney
Fill in the Blank QuestionFill in the blank question.The hormone erythropoietin (EPO) controls the rate of red blood cell formation through feedback mechanisms.
Why is the presence of too many erythrocytes a problem?Blood lacks enough oxygen, resulting in hypoxia.Blood becomes too viscous, making it difficult for the heart to pump it.Blood is unable to break down and destroy old erythroctyes.Blood cannot produce erythropoietin.
Which situation would reduce the ability of the blood to carry oxygen?Multiple choice question.reduced red blood cell countincreased red blood cell countincreased hematocritdecreased platelet count
Which of the following accurately describes the process of erythropoiesis triggered by hypoxia?Group of answer choicesWhen hypoxia occurs, the lungs release erythropoietin into the bloodstream, which then travels to the bone marrow to stimulate the production of red blood cells.In response to hypoxia, the bone marrow releases erythropoietin, which then signals the kidney to increase the production of red blood cells.Hypoxia triggers the release of factors into the bloodstream that are detected by the kidney, leading to the release of erythropoietin, which acts on the bone marrow to stimulate the production of red blood cells.Hypoxia stimulates the release of erythropoietin by the liver, which then acts directly on bone marrow to increase red blood cell production.
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