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Aim: What is Tobacco and what are the health risks involved in smoking?

Aim: What is Tobacco and what are the health risks involved in smoking?. Do Now: Which government department decides what drugs are legal and illegal? Hand in HW Test next Friday 12/12: Nervous System, Tobacco and Alcohol use. Tobacco. Crumbled Tobacco leaves Rolled Tobacco leaves

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Aim: What is Tobacco and what are the health risks involved in smoking?

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  1. Aim: What is Tobacco and what are the health risks involved in smoking? • Do Now: Which government department decides what drugs are legal and illegal? • Hand in HW • Test next Friday 12/12: Nervous System, Tobacco and Alcohol use

  2. Tobacco • Crumbled Tobacco leaves • Rolled Tobacco leaves • Grounded Leaves • Can be smoked, inhaled, “snuff” or chewed

  3. Health Warnings • Smoking causes heart disease, emphysema, and may cause lung cancer • Cigarette smoke contains carbon monoxide • Smoking by pregnant women may result in fetal injury, premature birth and low birth weight • Quitting smoking now greatly reduces serious risks to your health

  4. Discussion • Take a look again at the various health warning used on cigarette labels. • Do you feel these are sufficient labels? Why or why not? • How might you improve these labels?

  5. How things have changed…. Before 1964… Currently…

  6. Activity • Together with a partner create a list of reasons why teens may choose NOT to smoke • Then, create a list of reasons why teen may choose TO smoke

  7. Cigarettes and Advertisement

  8. Remember what you do now could affect the rest of your life…

  9. Aim: What is nicotine and how does it affect the body? • Do Now: How has the rate of people smoking changed in recent years? • Next week AIDS Awareness • Test next Friday moved to 12/19: Nervous system, Tobacco and Alcohol use

  10. What is Nicotine • World’s most widely used drug • No therapeutic application • Very powerful poison • Can be + or neutral: Which one do you think has an easier time being absorbed by the body? Why? • Deadliest drug with an LD of about 60mg • Kills in minutes • If you could absorb all of the nicotine in just two cigars you would die

  11. Factors affecting Nicotine Absorption • Number of and duration of puffs • Volume of smoke taken in • The length of the cigarette • The number of cigarettes smoked in a certain amount of time

  12. Cigarettes • Contain an average of 0.5 to 2.0 mg of nicotine • 10% of which is inhaled and absorbed • Lungs absorb nicotine faster than IV • Reaches the brain in about 10 seconds • Crosses BBB in 90 seconds

  13. Nicotine and its affect on the Nervous System • Classified as a Stimulant • Increases production of adrenaline and stimulates sympathetic nervous system • Interferes with action of the neurotransmitter Acetylcholine (Ach) • In small doses it acts as an agonist and in high doses as an antagonist another way to say this is it excites the Ach and then inhibits it 

  14. What does ACh do? • Excite Muscles • Controls Muscles in the lungs • Targets organs of the parasympathetic system

  15. Synaptic Animation http://www.bishopstopford.com/faculties/science/arthur/synapse.swf

  16. Aim: How does Nicotine affect the Nervous System? • Do Now: What type of drug is nicotine classified as? What part of the nervous system is mainly affected by it? • HW due tomorrow Read pgs 465-469 questions 1-4

  17. Nicotine and its affect on the Nervous System • Classified as a Stimulant • Increases production of adrenaline and stimulates sympathetic nervous system • Interferes with action of the neurotransmitter Acetylcholine (Ach) • In small doses it acts as an agonist and in high doses as an antagonist another way to say this is it excites the Ach and then inhibits it 

  18. What does ACh do? • Excite Muscles • Controls Muscles in the lungs • Targets organs of the parasympathetic system

  19. Synaptic Animation http://www.bishopstopford.com/faculties/science/arthur/synapse.swf

  20. Affects of Nicotine on the Body… • Dizziness • Nausea • Faintness • Clammy Skin • Vomiting • Diarrhea • Rush of Adrenaline • Increase Blood Pressure • Constriction of Blood Vessels—cold extremities and lower body temperature

  21. What else is in those Cigarettes? • Carbon Monoxide: The hemoglobin hog! • Tars: The Cilia Killer! • Health Advisory: Low-tar, low nicotine cigarettes DO NOT WORK! • Smokeless Tobacco Cigarettes don’t work either!

  22. Aim: What are the long term effects of smoking? • Do Now: How does nicotine affect AcH receptor sites? • Hand in HW • Aids Awareness week starting Monday • Test on 12/19: Neurons, Alcohol and Smoking

  23. Effects of Tobacco Smoke • Heart Disease • Atherosclerosis • Stroke • Cancer • Leukoplakia • Chronic Lung Disease • Bronchitis • Emphysema

  24. Warning: Some Slides are Disturbing

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