Which of the following is true

1. Gills are used by most of the aquatic animals
2. lungs are used by most of the terrestrial animals
3. Mammals have a well developed respiratory system
4. All of the above
Subtopic:  Respiratory System: Trachea & Basic Anatomy of Lung |
 97%
Level 1: 80%+
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Each terminal bronchiole gives rise to a cluster of very thin, irregular-walled pouch-like structures called alveoli. Functionally, this structural organisation increases:
1. Rate of diffusion by increasing surface area  
2. Diffusion distance  
3. Air turbulence  
4. Dead space
Subtopic:  Respiratory System: Trachea & Basic Anatomy of Lung | Respiratory Disorders: Part 1 | Respiratory Disorders: Part 2 | Respiratory Disorders - III |
 97%
Level 1: 80%+
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The mechanism of breathing depends on animal’s

1. habitat
2. level of organisation
3. Both 1 and 2
4. Body segmentation
Subtopic:  Respiratory System: Trachea & Basic Anatomy of Lung |
 96%
Level 1: 80%+
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Which of the following is not a function of the nasal cavity in humans?

1. Filteration of the air

2. Humidification of the air

3. Warming of the air

4. Removal of carbon dioxide from the air

Subtopic:  Respiratory System: Trachea & Basic Anatomy of Lung | Respiratory System: Pulmonary Volumes & Capacities |
 82%
Level 1: 80%+
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Which of the following is the function of the conducting part of the respiratory system?

1. clears the foreign particle
2. humidifies air
3. brings air to body temperature
4. All of these
Subtopic:  Respiratory System: Trachea & Basic Anatomy of Lung |
 99%
Level 1: 80%+
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Trachea divides at the level of ______thoracic vertebra into left and right primary bronchi

1. 5th 2. 6th
3. 10th 4. 4th
Subtopic:  Respiratory System: Trachea & Basic Anatomy of Lung |
 99%
Level 1: 80%+
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Lungs are covered by a double layered membrane which is called

1. Pleural membrane 2. visceral membrane
3. pulmonary membrane 4. parietal membrane
Subtopic:  Respiratory System: Trachea & Basic Anatomy of Lung |
 97%
Level 1: 80%+
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Match the following respiratory structures with their respective functions:
Structure Function
(A) Alveoli (1) Sound production
(B) Trachea (2) Gas exchange
(C) Larynx (3) Transport of air
(D) Diaphragm (4) Increase thoracic volume during inspiration

Options:
1. A-3, B-2, C-4, D-1
2. A-4, B-1, C-3, D-2
3. A-1, B-4, C-2, D-3
4. A-2, B-3, C-1, D-4
Subtopic:  Respiratory System: Trachea & Basic Anatomy of Lung |
 97%
Level 1: 80%+
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How many external nostrils are present in human beings

1. 1 2. 2
3. 3 4. None of these
Subtopic:  Respiratory System: Trachea & Basic Anatomy of Lung |
 96%
Level 1: 80%+
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Which of the following is part of the thoracic chamber?

1. ribs and vertebral column 2. diaphragm
3. sternum 4. All of the above
Subtopic:  Respiratory System: Trachea & Basic Anatomy of Lung |
 96%
Level 1: 80%+
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