Smoking and diseases Flashcards

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1
Q

Why is smoke harmful to the lungs and respiratory passages

A

1) It is hot
2) It has a drying effect
3) It contains many harmful chemicals

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2
Q

What causes you to be addicted to smoking

A

Nicotine

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3
Q

Suggest three harmful effects of smoking other than damage to the lungs and breathing passages

A

1) Increased blood pressure
2) Damage to heart
3) Bladder cancer

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4
Q

What in tobacco causes cancer

A

Tar

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5
Q

What in tobacco reduces oxygen supply

A

Carbon monoxide

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6
Q

What happens when the walls of the air sacs are destroyed

A

Emphysema

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7
Q

How does emphysema occur

A

The walls break down resulting in less surface area for gas exchange and breathing becomes very difficult

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8
Q

How does smoke harm the lungs

A

1) Particles trigger the action of phagocytes and mucus secreting cells so more mucus is produced.
2) Dries out the lining of the lungs
3) Chemicals may trigger extra cell division and start growth of tumors.

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9
Q

Why are smokers more likely to develop and infection

A

Cilia are lost and so cannot remove bacteria trapped in mucus.

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