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A healthy human can inspire or expire approximately how much air per minute?
The NCERT states, 'Tidal Volume (TV): ...a healthy man can inspire or expire approximately 6000 to 8000 mL of air per minute.'
What is the average additional volume of air a person can inspire by a forcible inspiration?
The NCERT defines 'Inspiratory Reserve Volume (IRV)' as 'Additional volume of air, a person can inspire by a forcible inspiration. This averages 2500 mL to 3000 mL.'
The volume of air that remains in the lungs even after a forcible expiration is known as:
As per the NCERT text, 'Residual Volume (RV): Volume of air remaining in the lungs even after a forcible expiration. This averages 1100 mL to 1200 mL.'
Which of the following equations correctly represents the Inspiratory Capacity (IC)?
The NCERT defines 'Inspiratory Capacity (IC)' as 'Total volume of air a person can inspire after a normal expiration. This includes tidal volume and inspiratory reserve volume (TV+IRV).'
Expiratory Capacity (EC) is the total volume of air a person can expire after a normal inspiration. It is calculated as:
According to the NCERT, 'Expiratory Capacity (EC): Total volume of air a person can expire after a normal inspiration. This includes tidal volume and expiratory reserve volume (TV+ERV).'
What is the formula for Functional Residual Capacity (FRC)?
The NCERT describes 'Functional Residual Capacity (FRC)' as 'Volume of air that will remain in the lungs after a normal expiration. This includes ERV+RV.'
Vital Capacity (VC) is defined as:
The NCERT states, 'Vital Capacity (VC): The maximum volume of air a person can breathe in after a forced expiration. This includes ERV, TV and IRV or the maximum volume of air a person can breathe out after a forced inspiration.'
Total Lung Capacity (TLC) can be calculated by which of the following combinations?
The NCERT states, 'Total Lung Capacity (TLC): Total volume of air accommodated in the lungs at the end of a forced inspiration. This includes RV, ERV, TV and IRV or vital capacity + residual volume.'
A spirometer is used to estimate:
The NCERT mentions, 'The volume of air involved in breathing movements can be estimated by using a spirometer which helps in clinical assessment of pulmonary functions.'
If a person has a Tidal Volume (TV) of 500 mL, Inspiratory Reserve Volume (IRV) of 3000 mL, and Expiratory Reserve Volume (ERV) of 1000 mL, what is their Inspiratory Capacity (IC)?
Inspiratory Capacity (IC) = TV + IRV. So, 500 mL + 3000 mL = 3500 mL.
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