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Q. No.Identify the label given in the diagram whose function is to reduce friction on the lung surface and if this is not present, then there will be damage to the membranes which finally would affect breathing.
Select the correct option.
1. B
2. A
3. C
4. D
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung |
67%
From NCERT
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Assertion (A): The anatomical setup of lungs in thorax is such that any change in the volume of the thoracic cavity will be reflected in the lungs cavity.
Reason (R): The thoracic chamber is formed dorsally by the vertebral column, ventrally by sternum, laterally by the ribs and on the lower side by diaphragm.
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.
Reason (R): The thoracic chamber is formed dorsally by the vertebral column, ventrally by sternum, laterally by the ribs and on the lower side by diaphragm.
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: Trachea & Basic Anatomy of Lung | Respiratory System: Pulmonary Ventilation |
59%
From NCERT
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Identify the correct descending order [begin with maximum value] of the partial pressure of oxygen at different parts involved in diffusion in comparison to those in the atmosphere:
| 1. | Atmosphere – Alveoli – Oxygenated blood – Tissues |
| 2. | Alveoli - Atmosphere – Oxygenated blood – Tissues |
| 3. | Atmosphere – Oxygenated blood – Alveoli – Tissues |
| 4. | Tissues – Alveoli – Deoxygenated blood – Oxygenated blood |
Subtopic: Respiratory System: Exchange of Gases |
86%
From NCERT
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Match the pulmonary volume/capacity given in Column I with the corresponding description in Column II and select the correct match from the codes given:
Codes:
| Column I | Column II | ||
| A | Expiratory reserve volume | P | Additional volume of air, a person can inspire by a forcible inspiration. |
| B | Inspiratory reserve volume | Q | Additional volume of air, a person can expire by a forcible expiration. |
| C | Residual volume | R | Volume of air that will remain in the lungs after a normal expiration. |
| D | Functional residual capacity | S | Volume of air remaining in the lungs even after a forcible expiration. |
| A | B | C | D | |
| 1. | P | Q | R | S |
| 2. | P | Q | S | R |
| 3. | Q | P | R | S |
| 4. | Q | P | S | R |
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
67%
From NCERT
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What is the maximum number of oxygen molecules that a molecule of haemoglobin can carry?
1. 2
2. 4
3. 6
4. 8
1. 2
2. 4
3. 6
4. 8
Subtopic: Respiratory System: Transport of Gases |
93%
From NCERT
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Total volume of air accommodated in the lungs at the end of a forced inspiration is:
1. VC + FRC
2. IC + ERV
3. ERV + TV + IRV – EC
4. TV + IRV + FRC
1. VC + FRC
2. IC + ERV
3. ERV + TV + IRV – EC
4. TV + IRV + FRC
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
62%
From NCERT
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Assertion (A): Gaseous exchange in mammals occurs in alveoli, air sacs clustered at the tips of the finest bronchioles.
Reason (R): The type of epithelial layer of serous membranes such as the pleura is the same as that found in alveoli.
In light of the above statements, choose the correct option:
1. (A) and (R) are true, (R) is the correct explanation of (A)
2. (A) and (R) are true, (R) is not the correct explanation of (A)
3. (A) is true, (R) is false
4. (A) is false, (R) is true
Reason (R): The type of epithelial layer of serous membranes such as the pleura is the same as that found in alveoli.
In light of the above statements, choose the correct option:
1. (A) and (R) are true, (R) is the correct explanation of (A)
2. (A) and (R) are true, (R) is not the correct explanation of (A)
3. (A) is true, (R) is false
4. (A) is false, (R) is true
Subtopic: Respiratory System: Exchange of Gases |
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The maximum volume of air a person can breathe out after a forced inspiration is called as:
1. Functional residual capacity
2. Vital capacity
3. Expiratory reserve volume
4. Residual volume
1. Functional residual capacity
2. Vital capacity
3. Expiratory reserve volume
4. Residual volume
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
68%
From NCERT
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Select the incorrect statement among the following:
1. The nasal cavity leads to the larynx, an intersection where the paths for food and air cross.
2. Air enters through the nostrils and is then filtered by hair, warmed, humidified, and sampled for odors as it flows through a maze of spaces in the nasal cavity.
3. The trachea branches into two bronchi, one leading to each lung.
4. During the swallowing of food glottis can be covered by a thin elastic cartilaginous flap called epiglottis.
1. The nasal cavity leads to the larynx, an intersection where the paths for food and air cross.
2. Air enters through the nostrils and is then filtered by hair, warmed, humidified, and sampled for odors as it flows through a maze of spaces in the nasal cavity.
3. The trachea branches into two bronchi, one leading to each lung.
4. During the swallowing of food glottis can be covered by a thin elastic cartilaginous flap called epiglottis.
Subtopic: Respiratory System: Upper Respiratory Tract |
78%
From NCERT
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Inflammation of bronchi and bronchioles leading to difficulty in breathing is characteristically seen in:
1. Bronchial asthma
2. Emphysema
3. Tuberculosis
4. Pneumonia
1. Bronchial asthma
2. Emphysema
3. Tuberculosis
4. Pneumonia
Subtopic: Respiratory Disorders: Part 1 | Respiratory Disorders: Part 2 | Respiratory Disorders - III |
85%
From NCERT
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