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Earn 100
We can increase the strength of inspiration and expiration by the help of additional muscles in
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Important Questions on Respiration and Circulation
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Match the following respiratory capacities and respiratory volumes of a normal human adult?
| Respiratory capacities | Respiratory volumes | ||
| i) | Residual volume | a) | 2800 mL |
| ii) | Vital capacity | b) | 3000 mL |
| iii) | Inspiratory reserve volume | c) | 1100 mL |
| iv) | Inspiratory capacity | d) | 4000 mL |
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Select the correct events that occur during inspiration.
(a) Contraction of diaphragm
(b) Contraction of external intercostal muscles
(c) Pulmonary volume decreases
(d) Intrapulmonary pressure increases
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| Column-I | Column-II | ||
| (A) | Tidal volume | (i) | 2500 to 3000 ml |
| (B) | IRV | (ii) | 1000 to 1100 ml |
| (C) | ERV | (iii) | 500 ml |
| (D) | RV | (iv) | 3400 to 4800 ml |
| (E) | VC | (v) | 1100 to 1200 ml |
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What changes can be observed in diaphragm during inhalation?
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(A) The movement of air in and out of the lungs is carried out by creating a pressure gradient between the lungs and atmosphere.
(B) Inspiration can occur if the pressure within the lungs is more than the atmospheric pressure.
(C) Expiration takes place when the intrapulmonary pressure is lesser than the atmospheric pressure.
(D) The diaphragm and a specialized set of intercostal muscles in between the ribs help in the generation of such pressure gradients for breathing.
How many of the following statements are correct?
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(ii) The impulses for voluntary breathing are sent by the medulla oblongata.
(iii) The trachea, primary, secondary and tertiary bronchi, and initial bronchioles are supported by incomplete cartilaginous rings.
(iv) The volume of air remaining in the lungs even after a forcible expiration is functional residual capacity.
How many of the above statements are correct?
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| Respiratory capacities | Respiratory volumes | ||
|---|---|---|---|
| (i) | Residual volume | (a) | 2500 mL |
| (ii) | Vital capacity | (b) | 3500 mL |
| (iii) | Inspiratory reserve volume | (c) | 1200 mL |
| (iv) | Inspiratory capacity | (d) | 4500 mL |
Which one of the following pairs of capacities and volumes is matched correctly with each other?
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