Altitude Video

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What is one of the body's immediate responses to low oxygen pressure at high altitudes?

• Decreased heart rate.

• Increased rate and depth of breathing.

• Increased plasma volume.

• Constriction of arteries in the brain.

What long-term adaptation occurs in the blood when a person stays at high altitudes for several days?

• An increase in white blood cells.

• A decrease in red blood cells.

• A decrease in plasma volume, increasing hemoglobin concentration.

• An increase in blood pressure throughout the body.

What are the two life-threatening conditions that can occur at very high altitudes due to fluid buildup in the brain or lungs?

• Acute Mountain Sickness and Hypothermia.

• High-Altitude Cerebral Edema and High-Altitude Pulmonary Edema.

• Dehydration and Frostbite.

• Hyperventilation and Tachycardia.