For each unit difference in the partial pressure across the diffusion membrane, the amount of carbon dioxide that diffuses:
1.
is higher than the amount of oxygen as the solubility of carbon dioxide is 20-25 times lower than that of oxygen
2.
is lower than the amount of oxygen as the solubility of carbon dioxide is 20-25 times lower than that of oxygen
3.
is higher than the amount of oxygen as the solubility of carbon dioxide is 20-25 times higher than that of oxygen
4.
is lower than the amount of oxygen as the solubility of carbon dioxide is 20-25 times higher than that of oxygen
Subtopic: Respiratory System: Exchange of Gases |
80%
Level 1: 80%+
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Which of the following pulmonary capacities is not correctly matched with its constituent pulmonary volumes?
| 1. | Inspiratory capacity | Tidal volume + Inspiratory reserve volume |
| 2. | Expiratory capacity | Tidal volume + Expiratory reserve volume |
| 3. | Functional residual capacity | Residual volume + Inspiratory reserve volume |
| 4. | Vital capacity | Tidal volume + Inspiratory reserve volume + Expiratory reserve volume |
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
90%
Level 1: 80%+
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In breathing:
| 1. | Contraction of internal costal muscles leads to inhalation |
| 2. | Contraction of diaphragm increases the volume of thoracic chamber in dorso-ventral axis |
| 3. | Inspiration occurs when there is a negative pressure in the lungs with respect to atmospheric pressure |
| 4. | The residual volume of the lungs averages 2500 ml to 3000 ml |
Subtopic: Respiratory System: Pulmonary Ventilation |
78%
Level 2: 60%+
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Under normal physiological conditions in human being every 100 ml of oxygenated blood can deliver _____________ml of O2 to the tissues.
1. 10 ml
2. 2 ml
3. 5 ml
4. 4 ml
Subtopic: Respiratory System: Transport of Gases |
86%
Level 1: 80%+
NEET - 2022
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Which of the following is not the function of conducting part of respiratory system?
| 1. | 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 |
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung |
84%
Level 1: 80%+
NEET - 2022
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Which of the following disorders represents decrease in respiratory surface due to damaged alveolar walls?
| 1. | Hypocapnia | 2. | Bronchitis |
| 3. | Asthma | 4. | Emphysema |
Subtopic: Respiratory Disorders: Part 1 |
90%
Level 1: 80%+
NEET - 2022
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In the regulation of respiration, a chemosensitive area adjacent to the rhythm centre in the medulla region of the brain, is highly sensitive to:
1. \(HCO^-_3\)
2. \(CO_2\)
3. \(O_2\)
4. \(N_2\)
Subtopic: Respiratory System: Regulation of Respiration |
79%
Level 2: 60%+
NEET - 2022
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When you take a deep breath, your stomach moves out because
| 1. | swallowing air increases the volume of the thoracic cavity |
| 2. | your stomach shouldn’t move out when you take a deep breath because you want the volume of your chest cavity to increase, not your abdominal cavity |
| 3. | contracting your abdominal muscles pushes your stomach out, generating negative pressure in your lungs. |
| 4. | when your diaphragm contracts, it moves down, pressing your abdominal cavity out. |
Subtopic: Respiratory System: Exchange of Gases |
Level 3: 35%-60%
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In the following questions a statement of Assertion (A) is followed by a statement of Reason (R).
| Assertion (A): | In mammals –ve pressure breathing takes place. |
| Reason (R): | Inspiration can occurs if the transpulmonary pressure is less than the atmospheric pressurea. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Respiratory System: Exchange of Gases |
77%
Level 2: 60%+
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Values of partial pressure of oxygen and carbon dioxide in alveolar air are 104 mm Hg and 40 mm Hg respectively. Similar values in the venous blood are:
| 1. | 104 mm Hg and 40 mm Hg | 2. | 40 mm Hg and 45 mm Hg |
| 3. | 46 mm Hg and 37 mm Hg | 4. | 120 mm Hg and 60 mm Hg |
Subtopic: Respiratory System: Exchange of Gases |
88%
Level 1: 80%+
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