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MODULE 2—INTRODUCTION TO

PSYCHOACTIVE SUBSTANCE USE

Curriculum1Physil!y "#$ Ph"rm"cl!y

%r A$$ic&i# Pr%'ssi#"ls

 Th' Clm( Pl"# Asi"# C'#&r' %r C'r&i)c"&i# "#$ E$uc"&i# % A$$ic&i# Pr%'ssi#"ls Tr"i#i#! S'ri's

Curriculum 1

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2.2

Module 2 Learning Objectives

 Define psychoactive substance

 List general ways in which psychoactive

substances affect mood, thoughts, and behavior 

 List the four main categories (classes) of

psychoactive substances and several substances

within each

 List the methods of administering psychoactivesubstances

 Discuss the levels of progression of substance

use

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2.3

Psychoactive Substances

  Affect the bodys central nervous system

 !hange how people behave or perceive what

is happening around them

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2."

Central Nervous System

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2.#

Blood – Brain Barrier

Large, water-solublemolecules are

blocked

Small, fat-solublemolecules can enter

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2.$

Pharmacology

 %tudies the effects of medications and other

substances on the body and the brain

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2.&

HalfLife

 'he amount of time it taes to eliminate half of

the original dose of a substance from the body

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2.

Other !actors

  A persons age, the length of time a person

has regularly used a substance, and the

amount of a substance regularly used affect

how the body*   Absorbs psychoactive substances

  +etabolies them

 

-liminates them

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2.

Psychoactive Substances

 /sychoactive substances alter*  +ood

  'houghts

  %ensory perceptions  0ehavior 

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2.1

"#ects of PsychoactiveSubstances

 !an be positive or  negative

 Depend to a large etent on the type of

substance used

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2.11

$rug Classes% "&am'les

Stimulants O'ioids(narcotics)

$e'ressants Hallucinogens

Cocaine Heroin   Alcohol LSD

Amphetamine Morphine BarbituratesMescaline

Peyote

Methamphetamine Opium Benodiaepines !cstasy

Nicotine,

Caffeine Demerol

*"mm"+Hy$r,y(u&yr"&

' -*HB./Rhy0#l

Mushrooms

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2.12

Legal Substances

 4ust because a substance is legal does not

mean it is safer than an illegal substance

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2.13

Other

 %ome drugs do not fit neatly into a category*  !annabinoids (mari5uana, hashish)

  6hat7+iraa

  Dissociative anesthetics (phencyclidine 8/!/9,etamine)

  :nhalants solvents, gases, nitrites

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2.1"

*outes of +dministration

 %wallowing

 %norting

 %moing

 :nhaling fumes

 :ntramuscular (:+) in5ection

 %ubcutaneous (%!) in5ection

 :ntravenous (:;) in5ection

 'opical

 %ublingual

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2.1#

*outes of +dministration

 'he faster the drug hits the brain, the greater

and more reinforcing its effect

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2.1$

S'eed of +ction

 %moing* & – 1 seconds

 :ntravenous in5ecting* 1# – 3 seconds

 :n5ecting into the muscle or under the sin* 3 – #

minutes

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2.1&

S'eed of +ction

 +ucous membrane absorption (snorting,

rectal)* 3 – # minutes

 %wallowing* 2 – 3 minutes

  Absorbed through sin* %lowly over a long

period

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2.1

Small,rou' "&ercise% *outesof +dministration

 

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2.1

Break1# minutes

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2.2

Progression of -se

 -perimental7recreational use

 !ircumstantial7=ccasional use

 :ntensified7regular use

 !ompulsive7addictive use

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2.21

Learning +ssessment

 >rite one ?ui ?uestion about todays material

on a piece of paper

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2.22

 .ournal

 >hat did you learn today that you did not

already now@

 ow might you apply what you learned to your

 5ob@ >hat ?uestions do you still have@