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Q. No.Consider the given two statements:
I:
The contraction of diaphragm brings about inhalation.
II:
The contraction of external intercostals bring about exhalation.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Â Mechanism of Breathing |
 82%
From NCERT
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Binding of oxygen with hemoglobin is primarily related to:
1. Partial pressure of carbon dioxide
2. Hydrogen ion concentration
3. Temperature
4. Partial pressure of oxygen
1. Partial pressure of carbon dioxide
2. Hydrogen ion concentration
3. Temperature
4. Partial pressure of oxygen
Subtopic: Â Respiratory System: Transport of Gases |
 87%
From NCERT
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Identify the incorrect statement:
| 1. | Our lungs remove 5 mL carbon dioxide per minute per 100 mL of blood |
| 2. | On an average, 25 to 30 grams of urea is excreted out per day |
| 3. | An adult human excretes on an average 1 to 1.5 liters of urine per day |
| 4. | Approximately 1 million nephrons are present in each kidney |
Subtopic: Â Respiratory System: Transport of Gases |
 92%
From NCERT
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Consider the given two statements:
| Statement I: | The primary drive for breathing at rest is the concentration of oxygen in the blood rather than the concentration of carbon dioxide. |
| Statement II: | Carbon dioxide and hydrogen ion concentration have no effect on central chemoreceptors in the brain. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Â Respiratory System: Exchange of Gases |
 65%
From NCERT
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| Assertion (A): | Steroids are very important in the management of bronchial asthma. |
| Reason (R): | Bronchial asthma is an inflammatory disorder. |
| 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. | (A) is False and (R) is True. |
Subtopic: Â Respiratory Disorders: Part 1 |
 54%
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Residual volume in lungs:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | Prevents Lung Collapse |
| II: | Facilitates Gas Exchange |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Â Respiratory System: Pulmonary Volumes & Capacities |
From NCERT
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Match the following locations with their typical partial pressure of oxygen (pO2):
Codes:
| Column I | Column II | ||
| A | Alveoli | P | 104 mm Hg |
| B | Arterial Blood | Q | 40 mm Hg |
| C | Venous Blood | R | 95 mm Hg |
| D | Atmospheric Air | S | 159 mm Hg |
| A | B | C | D | |
| 1. | R | P | S | Q |
| 2. | P | R | Q | S |
| 3. | P | Q | R | S |
| 4. | Q | P | S | R |
Subtopic: Â Respiratory System: Exchange of Gases |
 85%
From NCERT
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Inspiration is initiated by:
| 1. | the contraction of diaphragm which increases the volume of thoracic chamber in the antero-posterior axis. |
| 2. | the contraction of diaphragm which increases the volume of thoracic chamber in the dorso-ventral axis. |
| 3. | the contraction of external inter-costal muscles which increases the volume of the thoracic chamber in the dorso-ventral axis. |
| 4. | the contraction of external inter-costal muscles which increases the volume of the thoracic chamber in the antero-posterior axis. |
Subtopic: Â Respiratory System: Pulmonary Ventilation |
 78%
From NCERT
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The thoracic chamber is formed:
Select the correct match from the codes given:
| Column I | Column II | ||
| A. | Dorsally by | P. | The Sternum |
| B. | Ventrally by | Q. | The vertebral column |
| C. | Laterally by | R. | The rib cage |
| D. | Inferiorly by | S. | The Diaphragm |
| A | B | C | D | |
| 1. | Q | P | R | S |
| 2. | Q | P | S | R |
| 3. | P | Q | R | S |
| 4. | P | Q | S | R |
Subtopic: Â Respiratory System: Trachea & Basic Anatomy of Lung |
 88%
From NCERT
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Regarding the regulation of respiration by brain:
| I: | The rhythm center is located in the medulla oblongata. |
| II: | Pneumotaxic center is located in the mid brain |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is incorrect; Statement II is correct |
| 3. | Statement I is correct; Statement II is incorrect |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Â Respiratory System: Regulation of Respiration |
 74%
From NCERT
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