Chapter 10 Tobacco/Addiction/Respiratory System

Do Now List 3 reasons you should refuse an offer of a cigarette.

Harmful Effects on the Body 4000 chemicals (single puff) 43 cause cancer 400,000 people die each year

Harmful Substances in Tobacco 1.Nicotine 2.Methanol 3.Tar 4.Cyanide 5.Carbon monoxide 6.Formaldehyde

Important Definitions 1.Nicotine – an addictive drug found in tobacco 2.Tar - a thick, dark liquid that forms when tobacco burns 3.Carbon monoxide – a colorless, odorless, poisonous gas produced when tobacco burns 4.Methanol - a poisonous liquid alcohol, known to cause blindness 5.Cyanide – a deadly poison 6.Formaldehyde – acidic gas used in a lab, disinfects and preserves

Forms of Tobacco 1.Cigarettes 2.Cigars/pipes 3.Smokeless tobacco

Do now Although you breathe all the time, you probably don’t think about it very often. Describe the activities or conditions that make you aware of your breathing.

Respiratory System A set of organs that supply your body with oxygen and rid your body of carbon dioxide.

Parts of the Respiratory System 1.Nose/mouth – cilia trap dirt in nose 2.Epiglottis – flap that covers trachea to prevent food inside 3.Trachea (windpipe) – air from throat to lungs 4.Lungs – exchange oxygen and carbon dioxide 5.Bronchi – tube that branches from trachea to lungs 6.Diaphragm – muscle below lungs that expands/relaxes = breath

Breathing Process 1.Diaphragm expands > air enters the body through nose/mouth > epiglottis > trachea > bronchi 2.Bronchi divide > bronchioles > alveoli surrounded by capillaries > oxygen and carbon dioxide exchange = blood 3.Diaphragm relaxes > air leaves the body that contains carbon dioxide from the lungs

Illnesses of the Respiratory System Cold/Flu Caused by Virus Symptoms Runny nose, cough, fever

Illnesses of the Respiratory System Pneumonia Caused by Virus/Bacteria Symptoms Fever, chest pain

Illnesses of the Respiratory System Asthma Airways narrow Symptoms Wheezing, shortness of breath

Illnesses of the Respiratory System Tuberculosis Caused by Bacteria Symptoms Cough, fatigue, fatal

Illnesses of the Respiratory System Emphysema Caused by smoking, Alveoli harden Symptoms Difficulty breathing NO CURE!!

Illnesses of the Respiratory System Lung Cancer Caused by uncontrolled growth of cells that produce abnormally (surgery, radiation, medications)

Ways to Keep the RS Healthy 1.Don’t smoke 2.Avoid people/situations that expose you to smoke 3.Take care of your body = cold, flu

Do now List some ways you might help someone who wants to quit using tobacco.

Dependencies Psychological Dependence An addiction in which a person believes that he/she needs a drug in order to feel good or function normally Physical Dependence An addiction in which the body develops a chemical need for a drug.

Addiction A physiological or physical need for a drug or other substance

Do now Briefly explain why you think staying tobacco free is good for your health.

Reasons for Teenage Use 1.Peer pressure 2.Family members 3.Seem grown up 4.Look cool 5.Look like a celebrity 6.Hooked and can’t quit

Important Definitions 1.Secondhand smoke – air that has been contaminated by smoke 2.Mainstream smoke – smoke that a smoker inhales/exhales 3.Sidestream smoke – smoke that comes from the burning end of the cigarette 4.Passive smokers – non-smokers who breath secondhand smoke

Benefits of Saying NO to Tobacco 1.Healthy skin 2.Fresh breath 3.Honest toward parents/friends 4.Better smelling clothes/hair 5.Save money 6.Better health 7.More energy and endurance 8.Fewer allergies