Boyle - increases. Thus, the inflation of the lungs is...

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Boyle's Law Boyle's law states that the pressure of a gas is inversely proportional to volume. This means that as the volume of a container increases, the pressure of the gas in that container decreases and vice versa. So when the thoracic cavity expands (and because of the pleural fluid, the lungs also expand), the pressure of the air within the lungs drops below atmospheric pressure; thus air will flow down the gradient from the outside into the lungs in a process referred to as inhalation. Exhalation results from the reduction of thoracic cavity and lung volume, the increase in intrapulmonary pressure, and the movement of air down its gradient from inside the lungs to the outside. Charles' Law Charles' Law states that as the temperature of a gas increases, the volume occupied by that gas
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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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This note was uploaded on 01/30/2012 for the course BSC BSC1085 taught by Professor Sharonsimpson during the Fall '10 term at Broward College.

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