Respiratory Volumes & Capacities

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On an average, a healthy human breaths 12 - 16 Times/minute.
the volume of the air involved in breathing movements, can be estimated b using a spirometer, which helps in clinical assessment of the pulmonary functions

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T.V = 6000 - 8000 ml/min
IRV = 2500 - 3000 ml
ERV = 1000 - 1100ml
R.V = 1100 - 1200 ml

IC = TV + IRV
FRC = ERV+RV
VC = TV+IRV+ERV
TLC = VC + RV

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