Biology Keeping Healthy unit

What are some examples of substances that change the body?

Nicotine, caffeine and alcohol.

What do some different types of drugs do to the body?

Hallucinogens: alter mood, perception and cognative processes

Depressants: Slow down the activity of the central nervous system

Stimulants: increase the activity of the central nervous system.

What are some effects of depressants on human health and development?

reduced anxiety, impaired coordination, memory loss

What are some effects of hallucinogens on human health and development?

Cardiovascular issues, blurred vision, dizziness

What are some effects of stimulants on human health and development?

Increased energy, nausea, aggression

Why are some drugs illegal?

They can be dangerous and addictive

Drugs used in illegal doping

Steroids, blood doping, growth hormone 

Why is doping illegal?

It can be dangerous and unfair

How can blood doping improve performance?

It increases oxygen supply in the blood so increases stamina

How do steroids work?

Help gain muscle mass by boosting protein

How do growth hormones work?

Increases sprint capacity and muscle growth

Short term effects of drinking alcohol

slurred speech, impaired coordination and judgment and mood changes

Long term effects of drinking alcohol

Liver disease, high blood pressure and brain damage

Effects of smoking on the body

Increased blood pressure, Risk of heart attack and stroke, lung damage

How is bronchitis linked to smoking?

the chemicals in cigarettes irritate and damage the bronchi

How is emphysema linked to smoking?

The toxic chemicals trigger inflammation and destroy the fragile walls of the alveoli.