Why Is a Person Likely to Feel Breathless, Nauseous, and Dizzy

question 22

Multiple Choice

Why is a person likely to feel breathless, nauseous, and dizzy at 12,000 ft. above sea level?

• A) Lungs retain higher volumes of CO₂ at high altitudes.
• B) Higher altitudes result in buildup of interstitial fluid and slow down the rate of gas exchange in the alveoli.
• C) Cold temperatures at higher altitudes damage alveolar walls and reduce the available surface area for oxygen absorption.
• D) Blood O₂ level decreases due to reduced O₂ diffusion into the blood.
• E) Partial pressure of CO₂ in the blood increases due to higher partial pressure of CO₂ in the atmosphere.

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