Chapter 8 Tobacco Lesson 1 How Tobacco Affects the Body Next >> Click for: >> Main Menu >> Chapter 8 Assessment Teacher’s notes are available in the notes section of this presentation. Next >>

An addictive, or habit-forming, drug found in tobacco nicotine An addictive, or habit-forming, drug found in tobacco tar A thick, dark liquid that forms when tobacco burns carbon monoxide A colorless, odorless, poisonous gas produced when tobacco burns Click to reveal the definitions.

The tiny air sacs in the lungs alveoli The tiny air sacs in the lungs A disease that results in the destruction of the alveoli in the lungs emphysema Click to reveal the definitions.

In this lesson, you will be able to identify the harmful ingredients in tobacco smoke. describe how tobacco affects the body. apply the skill of advocacy to encourage someone to be tobacco free.

Headings in this Lesson Predicting Look over the headings in this lesson. Write a question that you think the lesson will answer. After the lesson, check to see if your question was answered. Headings in this Lesson Facts About Tobacco What Is in Tobacco? Forms of Tobacco Tobacco Affects Body Systems

= Facts About Tobacco 4,000 Harmful Chemicals! One puff of tobacco smoke 4,000 Harmful Chemicals! = Several of the chemicals in tobacco smoke can cause cancer and most of the 4,000 chemicals in tobacco smoke hurt your body’s ability to work properly. In the United States, more than 400,000 people die every year from smoking-related illnesses.

What Is In Tobacco? Tobacco products contain poisonous substances such as nicotine, tar, and carbon monoxide. nicotine An addictive, or habit-forming, drug found in tobacco Tobacco naturally contains harmful substances, but tobacco companies add more harmful ingredients when they prepare tobacco to be sold. Once you are addicted to nicotine, your body has a strong need, or craving, for it. As a result, you want to smoke again and again. Tar coats the airways and the linings of the lungs. Lungs coated with tar can become diseased. When carbon monoxide enters the body, it damages the brain and the heart by reducing the amount of oxygen available to these organs. tar A thick, dark liquid that forms when tobacco burns carbon monoxide A colorless, odorless, poisonous gas produced when tobacco burns

What Is In Tobacco? Cyanide Formaldehyde Methyl Ethyl Ketone Polonium 210 A deadly poison found in pest control products. A burning, stinging gas used as a preservative in laboratories. Causes nasal cancer. Used in solvents. Harms the central nervous system. An element known to cause cancer. These are only a few of the thousands of harmful ingredients contained in cigarettes and other forms of tobacco.

Forms of Tobacco Cigarettes Cigars and Pipes Smokeless Tobacco Filters do not keep out harmful chemicals. Flavored cigarettes have more chemicals than non-flavored cigarettes. Cigar smoke is more harmful than cigarette smoke. Smokers of cigars and pipes are more likely to get mouth, tongue, or lip cancer than people who don’t smoke. The two forms are chewing tobacco and snuff. Nicotine is absorbed into the body through the digestive tract. Smokeless tobacco is just as harmful and addictive as cigarettes. Tobacco companies harvest leaves from tobacco plants. They dry the leaves and prepare them for people to smoke or chew.

Tobacco Affects Body Systems Some of the effects of using tobacco include: Bad breath Bad odor in hair and clothes Increased heart rate Increased blood pressure Getting sick more often and longer Decreased ability to run as far or as fast

Respiratory System Breathing in tobacco smoke damages the alveoli, which can lead to emphysema. alveoli The tiny air sacs in the lungs When the alveoli are damaged, your lungs are less able to supply oxygen to your body. A disease that affects a large part of the lungs can lead to death. emphysema A disease that results in the destruction of the alveoli in the lungs

Digestive System Smoking can lead to mouth and stomach ulcers, which are painful, open sores. Smoking increases the chances that you will get cavities and gum disease. Smoking causes yellowing of the teeth.

This causes tobacco users to need more tobacco. Nervous System The brain adapts to nicotine by increasing the number of nicotine receptors. This causes tobacco users to need more tobacco. Your brain needs a healthy supply of oxygen. Tobacco smoke contains carbon monoxide, which cuts down the amount of oxygen that the blood can carry to the brain.

As a person smokes, blood vessels constrict. Circulatory System As a person smokes, blood vessels constrict. Over time, the blood vessels can harden, which can lead to heart attack, stroke, or coronary heart disease. Coronary heart disease is when the blood vessels turn hard or become clogged.

Bladder damage and increased risk of colorectal cancer Excretory System Lungs Blood Kidneys And Urine SMOKE CHEMICALS Smoke chemicals in tobacco smoke are absorbed from the lungs and get into the blood. From the blood, the chemicals get into the kidneys and urine. These chemicals damage the cells that line the inside of the bladder and increase the risk of cancer. Bladder damage and increased risk of colorectal cancer

What I Learned Vocabulary Define tar. Lesson 1 Review Tar is a thick, dark liquid that forms when tobacco burns.

Lesson 1 Review What I Learned Explain Describe the ways in which smoking harms the body. Answers may include that smoking damages the alveoli, leads to mouth and stomach ulcers, reduces oxygen flow to the brain, constricts blood vessels, and damages the cells inside of the bladder.

Lesson 1 Review What I Learned Identify Name five substances in tobacco smoke that are harmful to the body. nicotine, tar, carbon monoxide, cyanide, and methanol

What I Learned List Name three forms of tobacco. Lesson 1 Review cigarettes, cigars, smokeless tobacco

Lesson 1 Review Thinking Critically Hypothesize How might you influence a peer to make the healthful choice to quit chewing tobacco? Answers, which will vary, should include information on the health risks of chewing tobacco.

Lesson 1 Review Thinking Critically Analyze Why do you think it is important for a teen to never try tobacco? Sample answer: Nicotine is addictive, and using tobacco can cause cancer.

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