The document discusses psychoactive substances and their effects. It describes that psychoactive substances are capable of altering normal brain function and consciousness by interacting with the central nervous system. It categorizes psychoactive drugs into four main types: depressants, stimulants, opioids, and hallucinogens. Depressants like alcohol and benzodiazepines slow brain activity while stimulants like cocaine and amphetamines increase it. Opioids relieve pain by interacting with opioid receptors. Hallucinogens alter cognition and perception. The document provides examples of commonly used psychoactive substances and their origins and effects.

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What drugs do people use most?
Apart from medicines and caffeine, tmost
Irish people use is alcoholegal drugs that
people are most likely to try are:
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3
4
Cannabis
Cocaine
Amphetamine
Nitrites, poppers

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2
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4
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Cocaine
Ecstasy
Magic mushrooms
Solvents (aerosols, gases and
glues
Minor tranquillisers (not prescribed)
Heroin , Crack cocaine

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A psychoactive drug is capable of disrupting
normal conscious activity the person, for example,
his thoughts, memory, emotions, moods, feelings
and perceptions

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1 - Use - actual drug consumption
2 - Abuse - This situation is characterized by
continuing to use it even when the user
generates personal problems (physical,
psychological) and social problems (dealing with
people, work, etc..)
3 - Dependence - A situation in which the
uniusuario has lost all control over the use of the
drug. The urgent need for consumption takes
you to organize your everyday life around it (like
getting the drug, when eaten, etc..). In terms of
the effects the person is in the position of having
to take the drug to prevent joint discomfort that
causes the lack thereof.

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* Is a substance that can alter the normal body function.
* Cause: one capable of altering normal conscious activity of
the person, for example, his thoughts, memory, emotions,
moods, feelings and perceptions. The psychoactive effects of
drugs may be different but also may have certain aspects that
are similar.
Different psychoactive drugs produce different effects and are
used for medicinal purposes, social and routine. These
substances are divided into four basic categories:
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depressants
stimulants
opiates
hallucinogens.

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* Depressants: Depressants are also known as hypnotics or
sedatives. These drugs slow and inhibit neural activity also
cause fatigue in the user.
*Stimulants: Stimulants increase brain activity. The most
commonly used are caffeine and nicotine. Amphetamine and
cocaine are also stimulants.
* Opioids: Opioids relieve painful sensations. Are derived
from opium and effects by interaction with opioid receptors
in the brain.
* Hallucinogens: Hallucinogens are substances that alter
cognition and sensory perception of the user. Marijuana,
psilocybin and mescaline are naturally occurring
hallucinogens, As Marijuana.

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*DEPRESSANTS :
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BARBITURATES, SEDATIVE AND ANXIOLYTIC :
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They are drugs that act on the nervous
system by decreasing their activity, and often
used to decrease anxiety and induce sleep .
Basically fall into two main families: barbituric
acid derivatives such as Seconal, and
benzodiazepine, among which are the Valium

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It is so called to any substance, natural or artificial,
which alters the body .Act on the central nervous
system, and then distributed by altering brain tissue
functions.
Is introduced into a living organism by any route
(inhalation, oral, intramuscular, intravenous).
substances according to their effects he Central
Nervous System:
Depressant substances: Alcohol, opiácidos
(morphine, heroin, etc.), benzodiazepines .
Stimulating substances: cocaine, amphetamines,
nicotine, xanthines .
Hallucinogens: LSD, psilocybin, peyote, ayaguasca
synthetic drugs.

20. PSYCHOACTIVE
SUBSTANCE
PRESENTED BY:
Ana María Orrego Prieto
GRADE:
802 J M
TEACHER:
GORETTI AZUERO

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Alcohol is one of the most abused drugs in our society, many
people accompany their social activities with alcohol and is
accepted as a pleasant accompaniment of relationships and
social encounters. This perception of alcohol has contributed
to extend their use, not only among adults but also among
youth and adolescents, that start at very early ages.
Although moderate alcohol use (1 or 2 glasses a day with
meals), could be beneficial to the health of some people, for
others their habits and consumption patterns may lead them
to have a real problem for both the involved and for the
environment in which it lives (health problems, abuse,
accidents and labor, alcoholism.

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The effects of alcohol vary in individuals and the amounts ingested ,
the main factors are :
Age : younger people and are in a process of physical and hormonal
are more susceptible to poisoning ( ethanol lethal dose in adults is
estimated to be between 5 and 8 g / kg . Of weight, whereas for
children is 3 g / kg. weight ) .
Weight : obviously less weight people tolerate less alcohol than
larger weight.
Sex : women tolerate less amount of ethanol in your body than men.
It also depends on other factors such as drinking alcohol on a full
stomach , ie after a meal , will hinder the poisoning, like drinking in
a more leisurely and short drinks and spaced in time.
Depending on the amount of ethanol in the blood that we are going
to be producing various effects we have fitted in 7 states in the
process of alcohol intake :

25. It is the principal alkaloid of a shrub called Erythroxylon coca
grown in the western part of South America (Colombia, Peru and
Bolivia). The shrub has a rough bark reddish brown, can reach up
to six meters high in the most favorable conditions, although
currently not leave in excess of two meters in order to facilitate
collection.
The coca leaf is the only part containing cocaine, is arranged in
groups of seven approximately each stem.

28. THANKS :