Ch.19 The Nervous System

Section 4: Alcohol & Other Drugs

Section 4

• Drug Abuse– Effects of Abused Drugs• Most commonly abused drugs, such as marijuana,

alcohol, and cocaine, are especially dangerous because of their immediate effects on the brain and other parts of the nervous system. In addition, long-term drug abuse can lead to addition and other health & social problems

– Tolerance

Section 4

• Drug Abuse– Addition– Other Effects of Drug Abuse– What is withdrawal?

Signs of Drug Abuse

• Sudden changes in mood• Lying, cheating• Forgetfulness, withdrawn attitude,

aggressiveness• Poor coordination • Slurred speech

How to Help if Someone is Abusing Drugs

• Seek adult or professional help• Stop covering up for the person and making

excuses• Talk to the person and express your concern• Ask another friend to help

Section 4

• Kinds of Abused Drugs– Commonly abused drugs include depressants,

stimulants, inhalants, hallucinogens, anabolic steroids, and alcohol

– Depressants– Stimulants

Section 4

• Kinds of Abused Drugs– Inhalants and Hallucinogens– Steroids– What kinds of drugs are classified as stimulants?

Section 4

• Alcohol– How Alcohol Affects the Body

Section 4

• Alcohol– Long-term Alcohol Abuse• Alcohol abuse can cause the destruction of cells in the

brain and liver, and can lead to addiction and emotional dependence• Alcoholism

– What organs are affected by alcohol abuse?