Unformatted text preview: increases. Thus, the inflation of the lungs is aided by the warming of inhaled air in the nasal cavity. Dalton's Law Air is composed of a mixture of gases and each partially contributes to the total pressure of the air. This is Dalton's Law, which states that the total pressure of a gas mixture is equal to the sum of each of the partial pressures of the component gases. Significantly, the partial pressures of gases influences the rate of diffusion of these gases and therefore gas exchange between the alveoli and the blood. Alveolar air is humidified in the nasal cavity and mixes with residual air in the alveoli; therefore alveolar air does not have the same proportions of gases as inhaled air....
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- Fall '10
- Anatomy, Charles, thoracic cavity