HK*4600 - Respiratory Physiology.docx

HK*4600 - Respiratory Physiology.docx - Respiratory...

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Respiratory Physiology Functions of the lung: Move oxygen from air into blood Move carbon dioxide out of blood Metabolizes some compounds Filters unwanted materials from the circulation Reservoir for blood Fick’s law of diffusion: 1. The pressure difference across the sheet 2. The surface area for diffusion 3. Inversely proportional to the thickness of the sheet Lung Zones 1) Conduction zone a. Not involved in gas exchange b. Oral and nasal cavities, trachea, bronchi and bronchioles c. Anatomical ‘deadspace’ 2) Respiratory zone a. Respiratory bronchioles, alveolar ducts and alveoli
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  • Spring '18
  • Lauren
  • Pressure difference

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