Question # 1

Total chemicals in tobacco smoke are:

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1000

2000

3000

4000

Lungs are enclosed in a membrane called;

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peritonium

pleural membrane

epidermis pericardium

The primary chemical stimulus for breathing is the concentration of.

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Carbon dioxide in blood.

Oxygen in blood

Carbon oxide in muscles

Oxygen in muscles.

Point out the FALSE statement about respiration.

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Gases can easily pass through the walls of the alveoli

Gas exchange in lungs is very efficient because lungs provide large surface area

In emphysema, the walls of alveoli break and there is more surface area.

Dust particles can damage the lung by irritating the inner alveoli surface.

In normal condition human respiration rate is:

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12 to 15 per minute

15 to 12 per minute

10 to 12 per minute

16 to 20 per minute

Amount of oxygen in expired air is:

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21%

16%

0.04%

4%

Which of the following is called voice box?

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Trachea

Larynx

Bronchi

Alveoli

Which kind of blood vessels are present around the alveoli?

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Artery

Capillary

Arteriole

Veins

The rate of breathing at rest in human is:

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16-20 times per minute

70-80times per minute

80-100times per minute

10 -20 times per minute

Which diisease is caused by Streptococcus pneumoniae:

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Bronchites

Emphysema

Pneumonia

Asthema

The structural and functional unit of lungs is:

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trachea

pharynx

broncioles

alveolus

Which bring deoxygenated blood form heart into lungs?

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Pulmonary veins

Pulmonary Artery

Aorta

Wind Pipe

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