Name two poisonous gases found in cigarette smoke that can spread to every organ in the body.

Carbon monoxide and nitrogen oxide

Explain how nicotine contributes to the development of atherosclerosis and increased risk of a heart attack.

Nicotine stimulates the release of epinephrine, which raises blood pressure. Additionally, nicotine can damage the lining of the inner walls of arteries, allowing fatty deposits called plaque to build up. This plaque narrows arteries, reducing blood flow and increasing the risk of a heart attack.

Describe the function of cilia in the bronchial tubes and explain how cigarette smoke impairs this function, leading to a 'smoker's cough'.

Cilia are tiny hair-like projections that line the bronchial tubes and sweep harmful substances out of the lungs. Cigarette smoke irritates the bronchial lining, causing it to swell and produce mucus, and also slows the movement of cilia. This allows smoke and mucus to remain in the lungs, which the body then attempts to expel by coughing repeatedly, resulting in a 'smoker's cough'.

How does the damage caused by cigarette smoke to the alveoli lead to the condition known as emphysema?

Cigarette smoke damages the alveoli, which are small air sacs responsible for the exchange of oxygen and carbon dioxide with the blood. Over time, this damage severely reduces the amount of oxygen that can reach the blood, leading to emphysema, a condition where individuals struggle to breathe and may require oxygen assistance.

Harmful Components of Tobacco

Grade 15 · Health · 45 min

What's Included

Learning Objective

I can explain how specific harmful components in tobacco affect human health.

Warm-Up Video

Nucleus Medical Media · 9:01

How Smoking Kills

Guided Notes

3 key concepts

1
The addictive chemical in tobacco, nicotine, flows through the bloodstream to your brain, where it induces a pleasurable feeling that can lead to desensitization and increased cravings.
2
Cigarette smoke contains poisonous gases like carbon monoxide and nitrogen oxide, along with at least 40 carcinogens that can damage DNA and cause cancer.
3
Smoking damages your lungs by irritating bronchial tubes and harming alveoli, leading to conditions such as chronic bronchitis and emphysema, which are collectively known as COPD.

Practice Questions

8 questions · Multiple choice & Short answer

Exit Ticket

Quick comprehension check

“Based on the provided content, identify two specific harmful components found in tobacco and explain how each component negatively affects human health.”

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Harmful Components of Tobacco

What's Included

Learning Objective

Warm-Up Video

Guided Notes

Practice Questions

Exit Ticket

Complete Lesson Package

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