2.4 Terminology of Respiratory Physiology Flashcards
What is the atmospheric pressure at sea level?
760mmHg
1 atm
What is Boyle’s law?
pressure of a given quantity of gas is inversely proportional to its volume
What is Boyle’s law a relationship between?
gas and pressure
What is Charle’s law?
the volume of a given quantity of gas is directly proportional to its temperatuer
What does Charle’s law explain in regards to the respiratory system?
why warming air is beneficial to the respiratory system
In regards to Charle’s law, what does higher temperature equate to?
greater gas volume
What is Dalton’s Law?
the total pressure of a gas mixture is equal to the sum of the partial pressures of the individual gases
What is a spirometer?
breathing device that can record important measurements of pulmonary ventilation
What is the tidal volume?
amount of air inhaled and exhaled in one cycle of quiet breathing
How much is tidal volume normally?
500ml
What is the inspiratory reserve volume?
maximum amount of air able to be inhaled beyond normal inhalation
How much is the IRV normally?
3000mL
What is the expiratory reserve volume?
maximum amount of air able to be exhaled beyond normal exhalation
How much is the ERV normally?
1200mL
What is the residual volume?
amount of air remaining in the lung that cannot be exhaled
