Mon. 5/9/2011

Warm-up:What external or

environmentalfactors can

cause diseases and health problems?

Ready, set, go…

• Take out a sheet of paper

• Groups for station rotations

• At reading stations:– Identify organ/site, function, external

factor, effect on organ/site

• At lab stations:– Record materials, 2 scenarios,

observations of before & after, etc.

Science Stations• Lab Station 1:

– Pour water on one sponge– Pour honey on other sponge

• Lab Station 2:– Pour water in one filter– Pour sandy water in other filter

• Lab Station 3 (at faucet):– Turn water on, into tube with valves

open (blue knob up)– Turn water on, into tube with valves

closed (blue knobs to right)

Can you match them?• Look at your observations from

the lab stations and your notes

from the reading stations

• In your groups, try matching the

scenarios: each lab station to its

partner reading station

• Take notes on your matches and

the reason for pairing them

For tomorrow…• Have your matches ready and

your reasons prepared

• In your groups, you will be

presenting your matches to the

class and defending them

Tues. 5/10/2011

Warm-up:Discuss different

drug, alcohol or tobacco

advertisementsyou have seen. What were they

showing? Shouldthere be more

regulation?

Tues. 5/10/2011

Review:Review

yesterday’slab activities:

your matches &reasons

Taking notes…

• Take out sheet of paper

• For each of the 3 categories (alcohol

smoking, drugs), write some facts,

statistics, key words/vocabulary,

and diseases

A depressant – substances that diminish functional activity, usually by depressing(slowing) the nervous system

Examples of other depressants:

•sedatives

•opiates

•Alcohol is absorbed by the stomach, enters the bloodstream and all body tissues

•The effects depend on a person’s age, weight, sex, food intake, and amount consumed

•Effects include: disinhibition, dizziness, slurred speech, nausea, vomiting, impaired judgment/coordination, & aggressive behaviors, alcohol poisoning (death)

•Brain damage

•Stroke

•Addiction

•Severe withdrawal (seizures, tremors, hallucinations)

•Heart disease

•Stomach ulcers

•Liver disease

•Cancer

•Impotence/infertility

Alcohol Facts

• 11 million American youth under the age of 21 drink alcohol

• Alcohol is the most frequently used drug by high school seniors, and its use is increasing

• Underage drinking is a factor in nearly half of all teen automobile crashes, the leading cause of death among teenagers

• Alcohol use contributes to youth suicides, homicides and fatal injuries – the leading cause of death among youth after auto crashes

• Alcohol abuse is linked to as many as two-thirds of all sexual assaults and date rapes of teens and college studentsAlcohol Video

The Effects of Smoking

Tobacco Facts• About 47 million adults in the US

smoke- even though ½ of these users will experience death or disability because of it!

• Cigarette smoking is the single most preventable cause of premature death in the US

• Each year 430,000 Americans die from smoking

• 1 in 5 deaths in the US is smoking related

Since the Surgeon General’s Report in 1964

• 10 million people have died from causes attributed to smoking (heart disease, emphysema)– 2 million were from lung cancer

• Smoking TRIPLES the risk of dying from heart disease

• Smokers die about seven years earlier than non-smokers

Starting Early…• 80% of adult smokers state that

they starting smoking before the age of 18. (you must be 18 in order to purchase cigarettes legally!)

• Every day, nearly 3000 young people become regular smokers

•70% of adolescent smokers say they would have never started if they could choose again.

• Stains the teeth• Reduces the

body’s ability to taste and smell

• Increases wrinkling of skin

Healthy! (non-smoker) Not Healthy! (smoker)

Tobacco Facts• Cigarette smoke contains over 4,800 chemicals, 69 of which are

known to cause cancer. Smoking is directly responsible for approximately 90 percent of lung cancer deaths

• About 8.6 million people in the U.S. have at least one serious illness caused by smoking

• The list of diseases caused by smoking includes chronic obstructive pulmonary disease, coronary heart disease, stroke, abdominal aortic aneurysm, acute myeloid leukemia, cataract, pneumonia, periodontitis, and bladder, esophageal, laryngeal, lung, oral, throat, cervical, kidney, stomach, and pancreatic cancers. Smoking is also a major factor in a variety of other conditions and disorders, including slowed healing of wounds, infertility, and peptic ulcer disease

• In 2007, 20 percent of high school students were current smokers. Over 6 percent of middle school students were current smokers in 2006

• Secondhand smoke, known human carcinogen, responsible for approximately 3,400 lung cancer deaths and 46,000 heart disease deaths in adult nonsmokers annually in the United States.

Smoking Video

Drugs& the

Teen

Brain

Pleasure/Reward Circuit

• Brain chemicals are released that give “good” feelings to insure survival (eating, positive self-esteem, sexual behavior)

• Dopamine is the brain’s “pleasure” chemical

• Addictive drugs affect this system in our brain

NeuronsHave 4 main parts:• Central body: directs ALL the nerve’s

activity• Dendrites: receive message and relay to

cell body• Axons: Send messages to dendrites• Myelin: increases transmission rate from

2 m/s to 120 m/s

What happens if the Myelin sheath is damaged by drugs?

Synapses• Where axons & dendrites “touch” (kinda)• Chemicals called neurotransmitters are released

from axons to dendrite• “Key/Lock” bond (each has unique fit)• Drugs can:- MIMIC (copy) the effect of a neurotransmitter- BLOCK receptors - Cause OVERPRODUCTION of

neurotransmitters

Drug Facts

• 21.8 million Americans (8.7%) aged 12 or older were current (past month) users of illicit drugs in 2009

• Of the 21.8 million Americans aged 12 or older who were current users of illicit drugs in 2009, 16.7 million (77%) were current users of marijuana, making it the most commonly used illicit drug

• Cocaine abusers can experience acute cardiovascular or cerebrovascular emergencies, such as a heart attack or stroke, which may cause sudden death

• Long-term methamphetamine abuse has many negative health consequences, including extreme weight loss, severe dental problems, anxiety, confusion, insomnia, mood disturbances, paranoia, delusions and violent behavior

• One study in primates showed that exposure to MDMA (Ecstasy) for only 4 days caused damage to serotonin nerve terminals that was still present 6 to 7 years later

Drug Video

“Anti” Ad

• Come up with an anti ad for only

one of the 3 (alcohol, smoking, drugs)

• Need to have:– At least 1 fact– At least 1 statistic– Slogan– Picture/drawing– Creativity