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Tobacco (chapter 10.1)
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What’s in Tobacco? More than chemicals of which at least 43 are carcinogens (cause cancer)
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Some examples include:
Nicotine - addictive drug that raises the heartbeat and increases the craving for more tobacco. Tar a thick, dark liquid that forms when tobacco burns. Carbon Monoxide- A colorless, odorless, poisonous gas made by burning tobacco
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Tobacco’s Effects on the Respiratory System
The alveoli (tiny air sacs in lungs ) may be damaged leading to a disease- emphysema. Lung cancer is much more common in smokers than nonsmokers.
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Digestive System Effects
Cancers of the mouth, throat, esophagus, stomach, and pancreas. Cavities, gum disease, stomach ulcers
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Excretory System Effects
Doubles the risk of getting bladder cancer. Even smokeless tobacco increases bladder cancer risk.
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Circulatory System Effects
Increased risk of heart disease
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Nervous System Effects
Reduces flow of oxygen to the brain possibly leading to stroke because blood vessels are constricted (narrowed)
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