(A) | Diffusion of gases (O2 and CO2) across alveolar membrane. |
(B) | Diffusion of O2 and CO2 between blood and tissues |
(C) | Transport of gases by the blood |
(D) | Pulmonary ventilation by which atmospheric air is drawn in and CO2 rich alveolar air is released out. |
(E) | Utilisation of O2 by the cells for catabolic reactions and resultant release of CO2 |
1. | (D), (A), (C), (B), (E) | 2. | (C), (B), (A), (E), (D) |
3. | (B), (C), (E), (D), (A) | 4. | (A), (C), (B), (E), (D) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. | Provides surface for diffusion of O2 and CO2 |
2. | It clears inhaled air from foreign particles |
3. | Inhaled air is humidified |
4. | Temperature of inhaled air is brought to body temperature |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyLungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because?
1. | there is a negative pressure in the lungs |
2. | there is a negative intrapleural pressure pulling at the lung walls |
3. | there is a positive intrapleural pressure |
4. | pressure in the lungs is higher than the atmospheric pressure |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe figure shows a diagrammatic view of the human respiratory system with labels A, B, C, and D. Select the option that gives the correct identification, main function, and/or characteristics:
1. | B-pleural membrane- surrounds ribs on both sides to provide cushion against rubbing. |
2. | C-alveoli-thin walled vascular bag-like structures for the exchange of gases. |
3. | D-lower end of the lungs-diaphragm pulls it down during inspiration. |
4. | A trachea-long tube supported by complete cartilaginous rings for conducting inspired air. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTwo friends are eating together at a dining table. One of them suddenly starts coughing while swallowing some food. This coughing would have been due to improper movement of:
1. | diaphragm | 2. | neck |
3. | tongue | 4. | epiglottis |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology