What is the summary of movement in the respiratory system?8 steps.

1) Air containing (O2) is inhaled into alveoli during inspiration phase of pulmonary ventilation. 2) O2 diffuses from alveoli into blood of pulmonary capillaries during alveolar gas exchange. 3) Oxygen is transported within blood from lungs -> to lungs -> to systemic cells of body. 4) Oxygen diffuses from blood within systemic capillaries into systemic cells during gas exchange. 5) CO2 diffuses from systemic cells into blood within systemic capillaries during systemic gas exchange. 6) CO2 is transported within blood from systemic cells to lungs. 7) CO2 diffuses from blood within pulmonary capillaries into alveoli during alveolar gas exchange. 8) Air (CO2) is exhaled from alveoli into atmosphere during expiratory phase of pulmonary ventilation.