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Explore total pulmonary ventilation and gas exchange processes in respiratory physiology, covering concepts like dead spaces, alveolar ventilation rate, the respiratory membrane, and gas exchange at the alveoli. Learn about the partial pressures of oxygen (Po2) and carbon dioxide (PCo2) at different respiratory levels.
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TOTAL PULMONARY VENTILATION Total pulmonary ventilation or Minute respiratory volume = Ventilation rate x Total volume =12 breaths/ mt x 500 ml/ breath =6000 ml / mt
Dead Spaces Anatomic dead Space + Physiological dead space Alveolar dead space }
Rate of Alveolar Ventilation =Ventilation rate x ( Tidal volume – dead space volume) = 12 x 500 – 150 = 12 x 350 = 4200 ml / mt
Physics of Diffusion • D P x A x S d x MW
Partial pressure of gases in air at various respiratory levels