Which of the Following Situations Comparing Inspired Air to Expired

question 52

Multiple Choice

Which of the following situations comparing inspired air to expired air is false?

• A) Oxygen diffuses into the arterial end of capillaries to the tissues and CO₂ diffuses into the tissues of the capillaries due to the differences in partial pressures.
• B) Oxygen diffuses into the arterial ends of pulmonary capillaries, and CO₂ diffuses into the alveoli because of differences in partial pressures.
• C) The partial pressure of O₂ is reduced in the pulmonary veins due to the mixing of blood drained from the bronchi and bronchial tree.
• D) Oxygen diffuses out of the arterial end of capillaries to the tissues and CO₂ diffuses out of the tissues to the capillaries due to the differences in partial pressures.

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