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
0 Ventilation: Exchange of air between atmosphere and alveoli by bulk flow 2 Exchange of O2 and CO, between alveolar air and blood in Process of lung capillaries by diffusion 3 Transport of O, and CO through pulmonary and systemic respiration: circulation by bulk flow o Exchange of O, and CO, between blood in tissue capillaries and cells in tissues by diffusion 6 Cellular utilization of O, and production of CO2 Be Atmospher VEntilation Alveoli 02cO2@Gas exchange Blood flow Blood flow Pulmonary circulation Right 3 Gas transport Left heart Systemic circulation o,CO, 4 Gas exchange S Cellular respiration
Process of Fig. 13.06 respiration:
Respiratory process Atmosphere VENTILATION (1) 1. External Alveoli O2 co GAS EXCHANGE②2) respiration Pulmonary circulation 2. Gas GAS TRANSPORT(3) heart transport Systemic circulation T GAS EXCHANGE (4) 3. Internal respiration CELLULAR RESPIRATION⑤)
Respiratory process 1. External respiration 3. Internal respiration 2. Gas transport
Pulmonary ventilation ■ Definition:The process of moving air nasal cavity peary larynx into and out of the trachea epiglottis bronchus lungs right lung diaphragm pleural cavity
Pulmonary ventilation ◼ Definition: The process of moving air into and out of the lungs
Structures of pulmonary ventilation 1. Respiratory muscle Primary muscles of respiration: external intercostals(iJ 间外肌)& diaphragm(膈肌) air enters r leaves ribcage moves ribcage moves up and out down and in lungs expand lungs get smaller diaphragm moves down diaphragm moves up Inhalation Exhalation
Structures of pulmonary ventilation 1. Respiratory muscle Primary muscles of respiration: external intercostals (肋 间外肌)& diaphragm（膈肌）