The Concentration of Oxygen Is Decreased at High Altitude

question 75

Multiple Choice

The concentration of oxygen is decreased at high altitude.Why would this make it harder for a person to get enough oxygen into their blood?

• A) Hemoglobin cannot bind oxygen well at low concentrations.
• B) The concentration gradient from the alveoli to the blood decreases.
• C) People are working harder at high altitude and have higher demands for oxygen.
• D) The concentration of oxygen in the blood is too low for diffusion into tissues.
• E) The heart cannot obtain enough energy to pump oxygen into the blood from the alveoli.

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Definitions:

Arrhythmia

an irregularity in the heartbeat or heart rhythm, ranging from minor palpitations to serious heart conditions.

Cardiac Arrest

A sudden, unexpected loss of heart function, breathing, and consciousness, usually resulting from an electrical disturbance in the heart.

Lymph Vessels

The network of vessels that carry lymph, a clear fluid rich in white blood cells, throughout the body as part of the lymphatic system.

Blood Plasma

The liquid component of blood that carries blood cells and other substances throughout the body, constituting about 55% of blood's volume.