1.7 - Smoking

• Biologie
• Middelbare school
• vwo
• Leerjaar 2

1.7 - Smoking tobacco and cannabis

Today's plan

1. HW review

2. Discuss tobacco smoke

3. Review measures to tackle smoking

4. Why do people smoke?

Composition of tobacco smoke

Notes:

1. Nicotine - substance that gets people addicted

2. Tar - in the tobacco leaves, released when smoking

            - damages cilia

3. Carbon monoxide - gas released while smoking

            - blood is less able to transport oxygen

Smokers in the NL from 1970-2010

E-cigarettes, vape pens 

and hookahs

E- cigarettes - Evaporated liquid that contains 

nicotine and flavouring

Vape pen - a form of e-cigarette but does not always contain nicotine : can contain metals, nitrogen compounds which can cause heart problems and cancer

Hookah- 30 times more carbon monoxide released - can lead to carbon monoxide poisoning

So why do people smoke?

• Smoking is an addiction
• People become psychologically dependent
• Habituation - more and more nicotine needed
• People become physically dependent
• Withdrawal symptoms

Measures to tackle smoking

- increasing the price of cigarettes

-warning signs on packets of cigarettes

-no advertising

-tobacco may not be sold to people

 under the age of 18

Cannabis

• Come from the hennep plant, Cannabis sativa
• Contains psychoactive substance THC - tetrahydrocannabinol
• Found in the female flower of the plant
• Can be smoked, eated, or inhaled

Effects of cannabis

HW: Read 1.7 - Smoking tobacco and cannabis

Do Qs 1 t/m 5