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Q. No.In the diffusion membrane in human lungs, a basement membrane supports:
I. Alveolar epithelium
II. Vascular endothelium
1.
Only I
2.
Only II
3.
Both I and II
4.
Neither I nor II
Subtopic: Respiratory System: Exchange of Gases |
71%
From NCERT
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Under normal physiological conditions, what percent of haemoglobin is saturated with oxygen when the partial pressure of oxygen is 40 mm Hg?
| 1. | 50 | 2. | 75 |
| 3. | 90 | 4. | 98 |
Subtopic: Respiratory System: Transport of Gases |
57%
From NCERT
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Contraction of diaphragm and contraction of external intercostals:
| 1. | decrease the intrapulmonary pressure and lead to inhalation |
| 2. | increase the intrapulmonary pressure and lead to inhalation |
| 3. | decrease the intrapulmonary pressure and lead to exhalation |
| 4. | increase the intrapulmonary pressure and lead to exhalation |
Subtopic: Respiratory System: Pulmonary Ventilation |
76%
From NCERT
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Which of the following values for the given parameter is incorrect?
| 1. | Partial pressure of oxygen in alveolar air | 104 mm Hg |
| 2. | Partial pressure of carbon dioxide in deoxygenated blood | 45 mm Hg |
| 3. | Transport of carbon dioxide in blood as bicarbonate | 70 % |
| 4. | Transport of carbon dioxide as carbaminohemoglobin | 7 % |
Subtopic: Respiratory System: Transport of Gases |
75%
From NCERT
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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 |
78%
From NCERT
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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 |
89%
From NCERT
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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 |
81%
From NCERT
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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 |
85%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
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%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
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 |
89%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
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