Pneumotaxic centre which can moderate the functions of the respiratory rhythm centre is present at:

1. Pons region in brain

2. Thalamus

3. Spinal cord

4. Right cerebral hemisphere

Subtopic:  Respiratory System: Regulation of Respiration |
 93%
From NCERT
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Haemoglobin is:

1. An oxygen carrier in human blood

2. A protein used as a food supplement

3. An oxygen scavenger in root nodules

4. A plant protein with high lysine content

Subtopic:  Respiratory System: Transport of Gases |
 93%
From NCERT
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The exchange of gases in the alveoli of the lungs takes place by:

1. osmosis

2. simple diffusion

3. passive transport

4. active transport

Subtopic:  Respiratory System: Exchange of Gases |
 88%
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Dead space air in man is:

1. 500 mL

2. 150 mL

3. 250 mL

4. 1.5 L

Subtopic:  Respiratory System: Pulmonary Volumes & Capacities |
 69%
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Amount of CO2 in expired air is about:

1. 0.04%

2. 0.03%

3. 4.5%

4. 21%

Subtopic:  Respiratory System: Transport of Gases |
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What is another name for the windpipe?

1. Trachea

2. Larynx

3. Oesophagus

4. Lungs

Subtopic:  Respiratory System: Trachea & Basic Anatomy of Lung |
 77%
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The effect of cigarette smoking and radon in combination on lungs is:

1. Fatal

2. Synergistic

3. Mutualistic

4. Antagonistic

Subtopic:  Respiratory Disorders - III |
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 What is another name for the windpipe?

1.  Trachea

2.  Larynx

3. Oesophagus

4.  Lungs

Subtopic:  Respiratory System: Trachea & Basic Anatomy of Lung |
 89%
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Tidal Volume and Expiratory Reserve Volume of an athlete is 500 mL and 1000 mL respectively. What will be his Expiratory Capacity if the Residual Volume is 1200 mL?

1. 2700 mL

2. 1500 mL

3. 1700 mL

4. 2200 mL

Subtopic:  Respiratory System: Pulmonary Volumes & Capacities |
 76%
From NCERT
NEET - 2019
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NEET 2023 - Target Batch - Aryan Raj Singh
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Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing due to:

1. reduction in the secretion of surfactants by pneumocytes
2. benign growth on mucous lining of nasal cavity
3. inflammation of bronchi and bronchioles 
4. proliferation of fibrous tissues and damage of the alveolar walls

Subtopic:  Respiratory Disorders: Part 1 |
 78%
From NCERT
NEET - 2019
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NEET 2023 - Target Batch - Aryan Raj Singh
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