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The Real Deal on Marijuana Cannabis Pot, herb, weed, grass, widow, ganja, hash, dank, mota/moto, hierba, pasto, etc. STRUCTURE OF THE ACTIVE REAGENT THC Concentration is Different in Various Preparations of Marijuana “Ordinary” marijuana ~3%

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The real deal on marijuana l.jpg

The Real Deal on Marijuana

Cannabis l.jpg

  • Pot, herb, weed, grass, widow, ganja, hash, dank, mota/moto, hierba, pasto, etc.

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THC Concentration is Different in Various

Preparations of Marijuana

  • “Ordinary” marijuana ~3%

  • Sinsemilla (seedless female plant) -7.5% average, up to 24%

  • Hashish (cannabis buds)- 3.6% average, up to 28%

  • Hash oil (non-polar extract of marijuana or hashish)- 16% average, up to 43%

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Cell Biology: Marijuana is a drug that binds receptors

on cell membranes


Binding of the drug to the receptor

causes changes within the cell


Structural changes

Functional changes


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Effects of Smoking Cannabis

  • Euphoria followed by tiredness, passivity

  • Eye reddening (a hallmark)

  • Increased heart rate, dry mouth and eyes

  • Dizziness

  • Defects in short-term memory and cognition

  • Lung Disease

  • Hormone abnormalities (gynecomastia)

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Pathway Of Marijuana In The Body







other organs/



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Normal Lungs and Physiology

Lungs are the site of gas exchange: oxygen enters blood and

carbon dioxide leaves blood

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Marijuana Damages the Lungs

  • Marijuana contains tar, carbon monoxide, and

  • carcinogens that damage the lungs

  • Marijuana smoke contains 50 to 70% more toxic chemicals

  • than tobacco smoke

  • Marijuana use increases the risk of lung disease

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Diseased Lung

Healthy Lung

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The Heart I

Right side of heart pumps blood to the lung where it picks up oxygen; left side of heart pumps blood to the entire body.

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Marijuana Harms Heart Function

  • Increases heart rate (tachycardia)

  • Vessels dilate (enlarge), disturbing heart


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Marijuana Affects the Brain

  • Marijuana Acts On :

  • Cerebellum (coordination)

  • Basal ganglia (motor)

  • Hippocampus (memory)

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Marijuana Can Cause Brain Damage

  • Loss of short-term memory

  • Cognitive deficits

  • Apathy

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Altered hormone levels

Enlarged breasts in males (gynecomastia)

Hormone Problems are Associated with Marijuana Use

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Medical Marijuana

  • THC is available by prescription (Marinol)

  • Antiemetic (prevents vomiting)

  • Glaucoma

  • Muscle relaxant

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Contact Information

Adolescent Counseling Services

650-424-0852 or 650-424-9853 (Fax)

4000 Middlefield Road Rm FH, Palo Alto, CA 94303

Stanford Chapter of Student National Medical Association

Aileen Green

[email protected]

ChaRandle Jordan

[email protected]


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References for Images marijuana/blunt.jpg

cannabis.gif (chemical structure of THC) 

man.gif (smoking stick figure) NatSci/html/Major8.html 

Lungs.jpg (schematic of lung) Illness/the_lung.htm 

Lung Blood -air barrier copy W... (schematic of gas exchange in alveolus) exgasbarrierdiag.htm 

clean_lung_hr.jpg (healthy lung) art/clean_lung_hr.jpg 

diseased_lung.jpg (diseased lung) lungs/diseased_lung.jpg 

 bc47.jpg (sagittal brain) medneuro/lab1/ 

brain.jpg (side view of head and brain) parents/