Lab 11: Pulmonary Ventilation

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Presentation transcript:

Lab 11: Pulmonary Ventilation Objectives: Stages of respiration Factors that influence diffusion rate Different volumes and intervals on a spirogram

5 Stages of Respiration Respiration Pulmonary Ventilation how the body obtains and uses oxygen and eliminates CO2 Pulmonary Ventilation Lungs Environment Pulmonary gas exchange Lungs Blood Stream Gas transport Within bloodstream Tissue/blood gas exchange Bloodstream Tissues Cellular Respiration Consumption of oxygen and production of CO2

Rate of Diffusion Main factors that influence diffusion: Diffusion distance, surface area and concentration gradient

Regulation of Co2 and O2 levels

Volume and Pressure https://www.youtube.com/watch?v=mhiPrjcC7Kk

Spirogram of lung volumes and Capacities Tidal Volume (TV): The volume of air inspired (or expired) during normal relaxed ventilation. Inspiratory Reserve Volume (IRV): The volume of air that may be forcibly inspired above the normal inspired tidal volume Expiratory Reserve Volume (ERV): The volume of air that may be forcibly expelled following normal expired tidal volume Vital Capacity (VC): The volume of air expired from maximal inspiration to maximal expiration. VC = IRV + TV + ERV Residual Volume (RV): The volume of air remaining in the lungs following maximal forceful expiration. Total Lung Capacity (Volume) (TLC)= IRV + TV + ERV + RV or TLC= VC + RV Functional Residual Capacity (FRC): The amount of air left in the lung after a normal expiration. FRC = RV + ERV or FRC = TLC - RV

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