PULMONARY VOLUMES & CAPACITIES

PULMONARY VOLUMES & CAPACITIES

I. PULMONARY VOLUME

 Volume of air in the lungs.

 Tidal volume (TV): The volume of air inspired or expired involuntarily in each normal breath. It is about 500 ml of air in average young adult man.

 Inspiratory Reserve volume (IRV): It is about 3000 ml.

 Expiratory Reserve Volume (ERV): It is about 1200 ml

II. PULMONARY CAPACITIES

 Combination of two or more pulmonary volumes.

 Total lung capacity (TLC): TV + IRV + RV + ERV. It is about 5800 ml.

RESPIRATORY DISORDERS

 COPD: Chronic Obstructive Pulmonary Disease which includes Emphysema, chronic bronchitis and Asthma.

 Tuberculosis: A bacterial disease caused by Mycobacterium tuberculosis.

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