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USMLE Practice: Environmental Influence on Physiological Indices

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USMLE Practice: Environmental Influence on Physiological Indices

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Questions and Answers

What is the physiological response to arterial hypoxia at high altitudes?

Increased renal bicarbonate (HCO3-) excretion (correct)

Decreased respiratory rate

Decreased erythropoietin production

Decreased mitochondrial density in a muscle biopsy

Which of the following indices would be expected to be higher in the man living at sea level?

Mitochondrial density in a muscle biopsy

Renal bicarbonate (HCO3-) excretion

Diameter of pulmonary vessels (correct)

Erythropoietin production

What causes an increase in hematocrit in people living at high altitude?

Increased respiratory rate

Increased mitochondrial density in a muscle biopsy (correct)

Decreased erythropoietin production

Increased renal bicarbonate (HCO3-) excretion

What is the effect of chronic exposure to hypoxemia caused by living at high altitude on mitochondrial density?

<p>Increases mitochondrial density</p> Signup and view all the answers

What is the impact of living at high altitude on pulmonary vessels?

<p>Pulmonary vasoconstriction</p> Signup and view all the answers

USMLE Practice: Environmental Influence on Physiological Indices

Choose a study mode

Podcast

Questions and Answers

What is the physiological response to arterial hypoxia at high altitudes?

Which of the following indices would be expected to be higher in the man living at sea level?

What causes an increase in hematocrit in people living at high altitude?

What is the effect of chronic exposure to hypoxemia caused by living at high altitude on mitochondrial density?

What is the impact of living at high altitude on pulmonary vessels?

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