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Respiratory Physiology overview

Oxygen is what percentage of dry air? 21%
What is the site of internal respiration? Mitochondria
What is the purpose of external respiration? No maintain mitochondrial respiration with a continual supply of oxygen
Ventilation and circulation are controlled Centrally
Po2 of air 159mmHg
Po2 in alveoli 100mmHg
Po2 in arteries 96mmHg
Po2 in veins 40mmHg
Po2 in cells 20mmHg
Pco2 in air 0mmHg
Pco2 in alveoli 40mmHg
Pco2 in veins 46mmHg
What is a partial pressure? Pressure that a gas would exert if it occupied the total volume of the mixture in the absence of other components
Ph2o at 37 degrees 47 mmHg
What is the role of hemoglobin? To drastically increase the amount of Oxygen in the blood
Equation for Po2 in moist inspired air (Barometric pressure-47) x .2093
Created by: mcasto