5.2 Sleep

This concept consists of three videos related to sleep. 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.

The Importance of Sleep

The first video provides an overview of the importance of sleep: http://www.youtube.com/watch?v=1XW-q3A20Nc (6:27).

1. Why do we need to sleep?
2. How does sleep affect our brains?
3. What is meant by "rejuvenating our bodies?"
4. How does sleep affect the levels of growth hormone?
5. What is a biological clock?
6. Describe the sleep cycle.
7. What is REM sleep?

Associated CK-12 Life Science Concepts

• Cyclic Behavior of Animals: /life-science/Cyclic-Behavior-of-Animals-in-Life-Science/lesson/Cyclic-Behavior-of-Animals-Basic/
• Nerve Cells and Nerve Impulses: /life-science/Nerve-Cells-and-Nerve-Impulses-in-Life-Science/lesson/Nerve-Cells-and-Nerve-Impulses/

Associated CK-12 Biology Concept

• Hormones: /biology/Hormones/lesson/Hormones/

Associated Link

• The Sleep-Memory Connection: http://www.pbs.org/wgbh/nova/body/sleep-memory.html

Sleep Debt

The second video is an overview of sleep habits: http://www.youtube.com/watch?v=6l6xyVGgkI0 (8:06).

1. How much sleep does a teenager need?
2. What is meant by "sleep debt?"
3. What issues are associated with sleep debt?
4. What is microsleep?
5. What are ghrelin and leptin?
6. What is meant by having good sleep habits?

Associated CK-12 Life Science Concepts

• Enzymes in the Digestive System: /life-science/Enzymes-in-the-Digestive-System-in-Life-Science/lesson/Enzymes-in-the-Digestive-System/

Sleep Disorders

The third video discusses sleep disorders and their consequences: http://www.youtube.com/watch?v=svyAUko5l3s (10:02).

1. What is a somnipathy?
2. What causes snoring?
3. What is sleep apnea?
4. What are symptoms of sleep apnea?
5. What causes sleep apnea?
6. What treatments are available for sleep apnea?
7. What is insomnia?
8. What are four factors that cause insomnia?
9. What is a solution for insomnia?

Associated CK-12 Life Science Concepts

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

Vocabulary

• biological clock: Structure that controls the activities of an organism whose activities change on a regular 24-hour cycle.

• circadian rhythm: Regular change in biology or behavior that occurs in a 24-hour cycle.

• hormone: A chemical messenger molecule.

• neurotransmitter: Chemical that carries a nerve impulse from one nerve cell to another at the synapse.

• 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

• Getting a good night sleep is important to staying healthy.
• Accumulating sleep debt or having poor sleep habits can keep you from being your best.
• Sleep disorders can prevent a good nights sleep.

Review

1. Why is sleep important?
2. Why is getting enough sleep important?
3. What can prevent a good nights sleep?