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Vital capacity is the maximum amount of air a person can breathe in after a forced expiration. It includes Tidal Volume (TV), Inspiratory Reserve Volume (IRV), and Expiratory Reserve Volume (ERV).
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Mechanism of Breathing and Respiratory Volumes
Inspiratory Capacity (IC) includes Tidal Volume (TV) and Inspiratory Reserve Volume (IRV), representing the maximum volume of air a person can inspire after a normal expiration.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Mechanism of Breathing and Respiratory Volumes
Inspiratory Capacity (IC) includes Tidal Volume and Inspiratory Reserve Volume, not Total Lung Capacity.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Mechanism of Breathing and Respiratory Volumes
Expiratory reserve volume refers to the additional air that can be exhaled after a normal expiration, making statement 3 correct.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Mechanism of Breathing and Respiratory Volumes
Expiratory Capacity (EC) is the total amount of air a person can expire after a normal inspiration (TV + ERV).
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Mechanism of Breathing and Respiratory Volumes
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