Physiology Which of the following is responsible for the movement of O2 from the alveoli into the blood in the pulmonary capillaries? A Active transport B Filtration C Facilitated diffusion D Passive diffusion 💡 Explanation Which of the following is responsible for the movement of O2 from the alveoli into the blood in the pulmonary capillaries? ✓ Correct Answer: D. Passive diffusion