External Respiration - Hypoxia= low tissue O2 levels...

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External Respiration: 1. Pulmonary ventilation = breathing, physical movement of air. 2. Gas diffusion= across the respiratory membrane between alveolar air spaces and alveolar capillaries and across capillary cell membranes between blood and other tissues. 3. Transport of oxygen and CO2 between alveolar capillaries and capillary beds.
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Unformatted text preview: Hypoxia= low tissue O2 levels Anoxia= O2 levels cut off and cells die. -air will flow from an area of high to low pressure. This is called a pressure gradient.-As the volume of the lungs increases, the pressure of the air decreases. As the volume decreases, the pressure increases....
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