Four major functional events of respiration 1. Pulmonary ventilation O. CO ENTILATION (1) ■2 Gas exchange GAS EXCHANGE② ung Tissue S TRANSPORT Left ■3 Gas transport in blood Systemic circulation GAS EXCHANGE (4) 4.Cellular respiration CELLULAR RESPIRATION⑤)Four major functional events of respiration ◼ 1.Pulmonary ventilation ◼ 2.Gas exchange – Lung – Tissue ◼ 3.Gas transport in blood ◼ 4.Cellular respiration