How Tobacco Affects the Body Page 230 Chapter 8 Lesson One How Tobacco Affects the Body Page 230

= Facts About Tobacco 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 that cigarette?

What Is In Tobacco? Tobacco products contain poisonous substances such as nicotine, tar, and carbon monoxide. nicotine _______________________________________________ _______________________________________________________ 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 _______________________________________ ________________________________________________________

What Is In Tobacco? ____________ ____________ 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 ________________ _________________ __________________ 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 odor in hair and clothes Increased blood pressure Decreased ability to run as far or as fast

_________________________________________ Respiratory System _________________________________________ 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 causes yellowing of the teeth.

_________________________________________ Nervous System The brain adapts to nicotine by increasing the number of nicotine receptors. _________________________________________ 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.

_______________________________________ Circulatory System _______________________________________ 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 _________ __________ _________ 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