World's Most Dangerous Drug | National Geographic

What is the main function of dopamine in the human brain?

• To help with muscle movement.

• To regulate body temperature.

• To create feelings of pleasure and reward.

• To control breathing and heart rate.

How does methamphetamine affect the amount of dopamine released in the brain compared to natural pleasures like food?

• It releases slightly less dopamine.

• It releases about the same amount of dopamine.

• It releases much more dopamine.

• It prevents dopamine from being released.

Why do scientists use mice in experiments to study drug addiction?

• Mice are easy to train for complex tasks.

• Mice do not experience pleasure from drugs.

• Mice's brains react to drugs in ways similar to humans.

• Mice can communicate their feelings about the drugs.

What is a long-term effect of methamphetamine use on the brain's ability to experience pleasure?

• The brain becomes more sensitive to pleasure.

• The brain can no longer experience pleasure, even without the drug.

• The brain only experiences pleasure from natural activities.

• The brain produces more dopamine naturally.