Practice free Breathing and Exchange of Gases (Zoology) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
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.
Which of the following conditions in the tissues would favour the dissociation of oxygen from oxyhaemoglobin?
The NCERT states, 'whereas in the tissues, where low $pO_2$, high $pCO_2$, high $H^+$ concentration and higher temperature exist, the conditions are favourable for dissociation of oxygen from the oxyhaemoglobin.'
What is the primary factor directly impacting the binding of oxygen with haemoglobin?
According to the NCERT, 'Binding of oxygen with haemoglobin is primarily related to partial pressure of $O_2$.'
The oxygen dissociation curve is a plot of:
The NCERT defines it as, 'A sigmoid curve is obtained when percentage saturation of haemoglobin with $O_2$ is plotted against the $pO_2$. This curve is called the Oxygen dissociation curve.'
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