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You take a 3-week trip to the Atacama Desert in Chile, where you sleep at a...

You take a 3-week trip to the Atacama Desert in Chile, where you sleep at a very high altitude of 13,000 feet. During that time, your body physiologically adjusted to the altitude. Which of the following has changed within your body?

oxygen now diffuses at a faster rate into your lung capillaries

your lungs now have a greater number of alveoli

you now have fewer hemoglobin molecules in each red blood cell

your blood now has more red blood cells

you now take fewer breaths per minute

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Answer #1

At high altitude,

your blood now has more red blood cells

Hemoglobin saturation will decrease at high altitudes so erythropoietin produces more RBC to compensate for it. So, the level of RBC increases.

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