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level: Level 1

Questions and Answers List

level questions: Level 1

QuestionAnswer
What are the values of partial pressure in alveolar airpO2 --> 13.3 kPa pCO2 --> 5.3 kPa
Partial pressure in venous bloodpO2 --> 6 kPa pCO2 --> 6.5 kPa
What is the movement of air with reference to partial pressure valuespO2 in alveolar gas > pO2 in returning blood pCO2 in alveolar gas < pCO2 in returning blood So oxygen will diffuse into blood and carbon dioxide out
What are factors that determine the rate of diffusionArea Resistance to diffusion Gradient of partial pressure
What is Henry's lawThe solubility (at equilibrium) of a gas in a liquid is directly proportional to the partial pressure of that gas. P = kHc P → partial pressure C → concentration K → solubility of the substance H → henry’s law constant
What is used to measure of ventilationSpirometer
What is the certain volume which enters and leaves with lungs with each breathTidal Volume ( 0.5 L )
What is the maximum lung volume not used in normal respirationInspiratory Reserve Volume ( 3.3 L )
What is the residual volume that remains after forced expirationResidual Volume ( 0.8L )
What is dead spacOnly part of the inspired air is therefore available for gas exchange - the remainder is contained in Dead Space and undergoes no interaction with the blood. This is known as Serial Dead Space