The effect of recreational drugs

Question 1

Name four types of recreational drugs?

Answer 1

Stimulants
Sedatives
Hallucinogens
Opioids

Question 2

What type of drug is Cocaine?

Answer 2

Stimulant

Question 3

What effect does Cocaine have on the CNS?

Answer 3

Alters synaptic transmission involving several neurotransmitters.

Greatest impact is on the activity of dopamine.

Increases the release of dopamine in the reward centre of the brain.

Cocaine blocks the reuptake of dopamine by binding with dopamine receptors.

The synapse is flooded with dopamine, all available for binding with the receptors which causes the ‘high’.

Question 4

What are the long term effects of repeated Cocaine use?

Answer 4

Dopamine receptors become downregulated (fewer are active).

This explains withdrawal, craving for the drug and the higher doses needed to get the same effects.

Question 5

What type of drug is Heroin?

Answer 5

Opioid