2.4: Terminology of Respiratory Physiology Flashcards
It is important to remember that the atmospheric pressure at sea level = ___1___ = ___2___.
- 760 mm Hg (mercury)
- 1 atm (one Atmosphere)
Boyle’s Law
The pressure of a given quantity of gas is inversely proportional to its volume. This means that there is higher pressure in a smaller volume or less pressure in a greater volume. Boyle’s law is a relationship between gas and pressure. This helps explain why inspiration and expiration can take place.
The pressure of a given quantity of gas is inversely proportional to its volume. This means that there is higher pressure in a smaller volume or less pressure in a greater volume. Boyle’s law is a relationship between gas and pressure. This helps explain why inspiration and expiration can take place.
Boyle’s Law
Charles’s Law
The volume of a given quantity of gas is directly proportional to its temperature. Charles’s law helps explain why warming air is beneficial to the respiratory system. The higher the temperature the greater gas volume, or the lower temperature the lower gas volume.
The volume of a given quantity of gas is directly proportional to its temperature. Charles’s law helps explain why warming air is beneficial to the respiratory system. The higher the temperature the greater gas volume, or the lower temperature the lower gas volume.
Charles’s Law
Dalton’s Law
The total pressure of a gas mixture is equal to the sum of the partial pressures (pp) of the individual gases. (i.e. ppO2 + ppCO2 + ppN2 = 1 atmosphere). There are different gas quantities or partial pressures in the body. The concentrations and partial pressures of gasses will affect the diffusion of those gases.
The total pressure of a gas mixture is equal to the sum of the partial pressures (pp) of the individual gases. (i.e. ppO2 + ppCO2 + ppN2 = 1 atmosphere). There are different gas quantities or partial pressures in the body. The concentrations and partial pressures of gasses will affect the diffusion of those gases.
Dalton’s Law
Measurement terminology commonly used to describe the mechanics of pulmonary ventilation can be recorded by having a subject breathe into a device called a ______.
spirometer
Tidal Volume (TV)
Amount of air inhaled and exhaled in one cycle of quiet breathing. This is typically about 500ml of air.
Amount of air inhaled and exhaled in one cycle of quiet breathing. This is typically about 500ml of air.
Tidal Volume (TV)
Inspiratory Reserve Volume (IRV)
Maximum amount of air able to be inhaled beyond normal inhalation. This is typically around 3000mL of air.
Maximum amount of air able to be inhaled beyond normal inhalation. This is typically around 3000mL of air.
Inspiratory Reserve Volume (IRV)
Expiratory Reserve Volume (ERV)
Maximum amount of air able to be exhaled beyond normal exhalation (with determined effort), typically around 1200mL of air.
Maximum amount of air able to be exhaled beyond normal exhalation (with determined effort), typically around 1200mL of air.
Expiratory Reserve Volume (ERV)
Residual Volume (RV)
Amount of air remaining in lung that cannot be exhaled, typically 1300mL of air.
Volume of air over time. Waves represent inhalation and exhalation.
