How Does Gas Exchange Work in the Capillary Beds Next

question 43

Multiple Choice

How does gas exchange work in the capillary beds next to the alveoli?

• A) Carbon dioxide diffuses from the air into the deoxygenated ("used") blood in the capillary beds, and oxygen diffuses from the blood to the alveoli.
• B) Oxygen is moved by active transport from the lungs to the deoxygenated ("used") blood in the capillary beds, and carbon dioxide diffuses from the blood to the alveoli.
• C) Oxygen diffuses from the air into the deoxygenated ("used") blood in the capillary beds, and carbon dioxide diffuses from that blood to the alveoli.
• D) Carbon dioxide is moved by active transport from the lungs to the deoxygenated ("used") blood in the capillary beds, and oxygen diffuses from the blood to the alveoli.
• E) Oxygen is moved by active transport from the lungs to the deoxygenated ("used") blood in the capillary beds, and carbon dioxide is moved by active transport from the blood to the alveoli.

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