Q. No.Name the cavities in which the lungs are located:
1. pleural and abdominal cavities.
2. pericardial and thoracic cavities.
3. pleural and thoracic cavities.
4. pleural and pericardial cavities.
Subtopic: Â Respiratory System: Trachea & Basic Anatomy of Lung |
 85%
Level 1: 80%+
Hints
A minimal amount of pleural fluid present in the pleural cavity:
| 1. | provides a medium for the exchange of respiratory gases |
| 2. | reduces friction between the visceral and parietal pleurae |
| 3. | provides lubrication for movements of the diaphragm |
| 4. | permits the exchange of electrolytes during respiration |
Subtopic: Â Respiratory System: Trachea & Basic Anatomy of Lung |
 91%
Level 1: 80%+
Hints
Most of the aquatic arthropods respire through:
| 1. diffusion over entire body surface | 2. gills |
| 3. tracheae and tracheoles | 4. skin |
Subtopic: Â Respiratory System: Trachea & Basic Anatomy of Lung |
 78%
Level 2: 60%+
Hints
The trachea divides into a right and a left primary bronchus at the level of:
1. 2nd thoracic vertebra
2. 3rd thoracic vertebra
3. 5th thoracic vertebra
4. 12th thoracic vertebra
1. 2nd thoracic vertebra
2. 3rd thoracic vertebra
3. 5th thoracic vertebra
4. 12th thoracic vertebra
Subtopic: Â Respiratory System: Trachea & Basic Anatomy of Lung |
 94%
Level 1: 80%+
Hints
Branchial respiration is seen in all the following except:
| 1. Aquatic arthropods | 2. Fishes |
| 3. Amphibians like frog | 4. Aquatic mollusks |
Subtopic: Â Respiratory System: Trachea & Basic Anatomy of Lung |
 57%
Level 3: 35%-60%
Hints
Incomplete cartilaginous rings are seen in the walls of all the following except:
| 1. Trachea | 2. Primary bronchus |
| 3. Tertiary bronchus | 4. Respiratory bronchiole |
Subtopic: Â Respiratory System: Trachea & Basic Anatomy of Lung |
 80%
Level 1: 80%+
Hints
The given figure shows the diagrammatic view of human respiratory system (sectional view of the left lung is also shown). Regarding the parts labelled as P, Q, R and S, which of the following statements are true?
1. Only I, II and III
2. Only I, III and IV
3. Only II, III and IV
4. I, II, III and IV
| I: | P is an incomplete cartilaginous ring seen only in trachea and principal bronchus. |
| II: | Q is the point where the trachea divides into a right and left primary bronchus and corresponds to the level of 5th thoracic vertebra. |
| III: | R shows the double-layered pleura where the outer pleural membrane is in close contact with the thoracic lining. |
| IV: | S is pleural cavity with minimal amount of pleural fluid which reduces friction on the lung surface. |
1. Only I, II and III
2. Only I, III and IV
3. Only II, III and IV
4. I, II, III and IV
Subtopic: Â Respiratory System: Trachea & Basic Anatomy of Lung |
 50%
Level 3: 35%-60%
Hints
The sound box in humans is:
1. the larynx and is entirely made up of cartilage
2. the larynx and is entirely made up of bone
3. the muscular pharynx
4. the glottis where mucosal folds are present
1. the larynx and is entirely made up of cartilage
2. the larynx and is entirely made up of bone
3. the muscular pharynx
4. the glottis where mucosal folds are present
Subtopic: Â Respiratory System: Trachea & Basic Anatomy of Lung |
 95%
Level 1: 80%+
Hints
Consider the given two statements:
| I: | Lower invertebrates like sponges, coelenterates and flatworms exchange oxygen with carbon dioxide by simple diffusion over their entire body surface. |
| II: | Fishes are the only vertebrates that do not use lungs as respiratory organs. |
| 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 Respiratory System: Trachea & Basic Anatomy of Lung |
 55%
Level 3: 35%-60%
Hints
Which of the following is not correctly matched?
| I: | Thoracic chamber is formed dorsally by | Sternum |
| II: | Thoracic chamber is formed ventrally by | Vertebral column |
| III: | Thoracic chamber is formed laterally by | Ribs |
| IV: | Thoracic chamber is formed on the lower side by | Diaphragm |
| 1. | I and II only | 2. | II only |
| 3. | III and IV only | 4. | I, II, III and IV |
Subtopic: Â Respiratory System: Trachea & Basic Anatomy of Lung |
 78%
Level 2: 60%+
Hints
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