Which of the following statements is NOT TRUE?

A. The partial pressure gradient of CO2 favors its movement from cells into the blood during internal respiration
B. The partial pressure of O2 is higher in the alveoli than in the blood during external respiration
C. High concentrations of H+ ions increases hemoglobin’s affinity for oxygen
D. The apneustic area sends excitatory signals to the inspiratory area when a person is not breathing


Answer: C. High concentrations of H+ ions increases hemoglobin’s affinity for oxygen

Anatomy & Physiology

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