The brain and addiction

The human brain weighs about as much as __________.

• a Chihuahua

• a doughnut

• a 1kg bag of potatoes

• 40 bananas

Neurons in the brain communicate with each other by ______________.

• passing axons

• releasing chemicals

• pumping blood

• Whatsapp

When you do something you enjoy, like watch a good movie, your _______ system gets activated.

• limbic

• digestive

• nervous

• respiratory

When someone uses drugs repeatedly, their brain ___________.

• changes colour

• becomes smaller than before

• is not changed

• becomes trained to crave the drug

After a prolonged period of drug abuse, the brain______________.

(choose more than 1 answer)

• needs less drug to get the same effect

• needs more drug to get the same effect

• experiences increasing amounts of dopamine

• experiences decreasing amounts of dopamine

The brain’s reward system is part of the __________.

• sensory cortex

• limbic system

• spinal cord

• meso-striatic pathway

Brain cells or neurons turn electrical impulses into __________.

• chemical signals

• movement

• axons

• food

Drugs work in the brain because they have (a) similar ____________.

• electrical charges as brain cells

• size and shape as natural brain chemicals

• nerve cells as the brain

• speed of uptake as brain chemicals

Drugs create intense feelings because they _______________________

• depress the nervous system

• shut off receptors in the occipital lobe

• cause a rise in dopamine in the limbic system

• speed up the hippocampus

Some people develop “tolerance” for drugs, meaning they need _____________________.

• more drug to get the same effect

• less drug to get the same effect

• neither A or B

• to call Ghostbusters