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Marijuana?

• Pot • Grass • Reefer • Weed • Herb • Mary Jane• MJ

Why Do People Smoke It?

How does Marijuana produce its Effects?

Cannabinoid receptors are abundant in:

• Cerebellum--------------------------body movement/coordinationHippocampus------------------------learning/memoryCerebral Cortex (especially cingulate, frontal, parietal regions)------higher cognitive functionsNucleus accumbens-----------------------reward centerBasal Ganglia-------------------------------(unconscious) movement control-Cannabinoid receptors are moderate in:Hypothalamus------------body housekeeping functions (body temp, salt, water, sugar)Amygdala--------------emotional response/fear/fight or flightSpinal Cord----------Peripheral sensation/painBrain Stem-----------sleep and arousal, motor controlCentral Gray---------analgesia/pain controlNucleus of solitary tract--------visceral sensation, nausea/vomiting

Effects on the Heart

Effects on Lungs

• Daily cough and phlegm production

• More frequent acute chest illnesses

• Increased risk of lung infections

• Obstructed airways

Marijuana & Driving

• Marijuana impairs judgment and motor coordination and slows reaction time, an intoxicated person has an increased chance of being involved in and being responsible for an accident.

Q&AQ-What are 3 names for Marijuana?

Pot

Grass

Reefer

Weed

Herb

Mary Jane

MJ

Q-Why do people smoke Marijuana?

• Relax• Fall asleep • More creative• Socialize• Boredom• Stress• Anger• Calm Down• Anxiety• Increase appetite• Decrease nausea

Q- Marijuana acts on the brain reward system that controls????

(same reward centre as sex & chocolate)

A- Pleasure

Q-How do people consume Marijuana?

• Smoke/eat/drink

• Joints

• Blunts

• Pipes

• Bongs

• Food

• Drinks

Q- What is the key ingredient min Marijuana that causes a “High”?

A- Delta-9-tetrahydrocannabinol (THC)

Q-How long can the effects of marijuana last?

• A-1-3 hours if smoked

• Up to 4 house if eaten or drank

Q-How does Marijuana affect driving?

• Because marijuana impairs judgment and motor coordination and slows reaction time, an intoxicated person has an increased chance of being involved in and being responsible for an accident.

Short term Effects

• Loss of coordination • Distortions in the sense of time• Vision and hearing• Sleepiness• Reddening of the eyes• Increased appetite • Relaxed muscles• Heart rate can speed up • In fact, in the first hour of

smoking marijuana, a user’s risk of a heart attack could increase fivefold.

• School performance is reduced through impaired memory and lessened ability to solve problems.

Long Term Effects

• Psychotic symptoms• Damage the lungs• Damage to the heart• Bronchitis • Can cause coughing and wheezing• It may reduce the body’s ability to fight

lung infections and illness. • Cancer

Myths & Facts

• Myth: Marijuana is harmless.

• Fact: Use of marijuana can cause significant health, safety, social and learning problems.

• Myth: Marijuana is not addictive.

• Fact: Recent research shows that use of marijuana can lead to physical dependence

• Myth: Marijuana is not as bad for you as tobacco.

• Fact: Marijuana is linked to respiratory problems, just like tobacco.

• Myth: Driving high is safer than driving drunk.

• Fact: Marijuana affects alertness, concentration, perception, coordination and reaction time.