Smoking

=Unit 2 Human Body Systems Work Independently and Together= =Chapter 1 The cell is the basic unit of life.=

2.3 The Circulatory and Respiratory Systems


 * 2.3 Smoking** Page 92

Lung cancer & emphysema are caused by smoking. Emphysema causes the alveoli walls to lose their elasticity, making breathing increasingly difficult as the disease progresses. People who have respiratory diseases cause by smoking will also have heart disease. The number one cause for lung cancer is smoking. A cigarette contains over 4000 chemicals; 50 of these chemicals are carcinogenic, meaning the research has shown exposure to these chemicals can potentially cause cancer. Smoking also destroys the cilia lining your respiratory system.


 * **Questions** || **Answers** ||
 * 1. What lung diseases are caused by smoking? || Lung cancer,and emphysema. ||
 * 2. Emphysema causes the alveoli walls to lose what? || To lose their elasticity. ||
 * 3. Smoking is also linked to what? || Hearts diseases. ||
 * 4. How many chemicals are in cigarettes? || Over 4000. ||
 * 5. Name the six most harmful chemicals that are in cigarettes and tobacco products. || Nicotine, tar, carbon monoxide,formaldehyde, hydrogen cyanide, and benzene. ||
 * 6. Smoking can destroy what? || Cilia lining in your respiratory system so that dirt and other particles trapped in the mucus cannot be removed easily. ||
 * 4. How many chemicals are in cigarettes? || Over 4000. ||
 * 5. Name the six most harmful chemicals that are in cigarettes and tobacco products. || Nicotine, tar, carbon monoxide,formaldehyde, hydrogen cyanide, and benzene. ||
 * 6. Smoking can destroy what? || Cilia lining in your respiratory system so that dirt and other particles trapped in the mucus cannot be removed easily. ||
 * 6. Smoking can destroy what? || Cilia lining in your respiratory system so that dirt and other particles trapped in the mucus cannot be removed easily. ||
 * 6. Smoking can destroy what? || Cilia lining in your respiratory system so that dirt and other particles trapped in the mucus cannot be removed easily. ||