6.2 Tobacco Use

This concept consists of three videos related to tobacco use and smoking. Each video link is followed by a set of questions related to the video. Read the questions prior to watching the video. Think about the questions as you watch the video, and/or answer the questions after watching the video.

Breathing and the Respiratory System

The first video provides an overview of breathing and the respiratory system: http://www.youtube.com/watch?v=qgPMPq3NvfM (5:16).

1. Why do you need to breath in order to survive?
2. What is in the air that is important and essential to our bodies?
3. What is ATP?
4. What path does air follow in our bodies?
5. Where is oxygen transferred into the blood?
6. What is the process of air exchange?
7. What is hemoglobin?

Associated CK-12 Life Science Concepts

• Cellular Respiration: /life-science/Cellular-Respiration-in-Life-Science/lesson/Cellular-Respiration-Basic/

• Components of Blood: /life-science/Components-of-Blood-in-Life-Science/lesson/Components-of-Blood/

• Processes of Breathing: /life-science/Processes-of-Breathing-in-Life-Science/lesson/Processes-of-Breathing-Basic/

• Process of Cellular Respiration: /life-science/Process-of-Cellular-Respiration-in-Life-Science/lesson/Process-of-Cellular-Respiration/

• Respiration: /life-science/Respiration-in-Life-Science/lesson/Respiration-Basic/

• Respiratory System Organs: /life-science/Respiratory-System-Organs-in-Life-Science/lesson/Respiratory-System-Organs-Basic/

What is Smoking

The second video is an overview of smoking and its harmful effects: http://www.youtube.com/watch?v=p_aI-ug4wgk (7:46).

1. What is smoking?
2. What harmful chemicals are found in tobacco products?
3. Why do people smoke?
4. Why is it difficult to quit smoking?
5. What is tar?
6. What is carbon monoxide?
7. How does smoking make breathing less efficient?
8. What is secondhand smoke?

Associated CK-12 Biology Concept

• Drugs and the Nervous System: /biology/Drugs-and-the-Nervous-System/lesson/Drugs-and-the-Nervous-System/

How Smoking Affects the Respiratory System

The third video discusses the effects smoking has on breathing: http://www.youtube.com/watch?v=jAsISg6MFmw (5:16).

1. What are 3 consequences of smoking?
2. How does smoking damage the windpipe?
3. How does smoking affect the lungs?
4. Why might a smoker feel tired more often than a nonsmoker?
5. Why does smoking damage the cardiovascular system?

Associated CK-12 Life Science Concepts

• Respiratory System Diseases: /life-science/Respiratory-System-Diseases-in-Life-Science/lesson/Respiratory-System-Diseases-Basic/

• Respiratory System Health: /life-science/Respiratory-System-Health-in-Life-Science/lesson/Respiratory-System-Health/

Vocabulary

• alveoli: Tiny sacs in the lungs where gas exchange takes place.

• ATP (adenosine triphosphate): Usable form of energy inside the cell.

• bronchi: Air passages in the respiratory tract that conduct air into the lungs.

• cellular respiration: Process of breaking down glucose to obtain energy in the form of ATP.

• hemoglobin: Protein in red blood cells that binds oxygen.

• larynx: Respiratory organ between the pharynx and trachea; also called the voice box because it allows the production of vocal sounds.

• pharynx: Long, tubular organ that connects the mouth and nasal cavity with the larynx; food and air pass through it.

• trachea: Long, tubular organ, also called the wind pipe, that carries air between the larynx and lungs.

Summary

• Oxygen is needed by the cells of the body to produce ATP.
• Oxygen travels to the body cells through the blood.
• Smoking disrupts the amount of oxygen that can travel in the blood.
• Smoking damages both the respiratory and cardiovascular systems.

Review

1. How does oxygen enter the blood?
2. Why is smoking harmful?