Unit 11 sleep
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Unit 11 Sleep. Describe the following pictures. Think about these questions. Why do people want to sleep? How do people sleep? Have you ever heard of sleep cycle?. Two purposes of sleep. Physical rest (body rest) Psychological rest (minds rest). Two kinds of sleep. Passive sleep

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Unit 11 Sleep

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Unit 11 sleep

Unit 11 Sleep


Describe the following pictures

Describe the following pictures


Think about these questions

Think about these questions

  • Why do people want to sleep?

  • How do people sleep?

  • Have you ever heard of sleep cycle?


Two purposes of sleep

Two purposes of sleep

  • Physical rest (body rest)

  • Psychological rest (minds rest)


Two kinds of sleep

Two kinds of sleep

  • Passive sleep

  • Active sleep


Passive sleep body rest

Passive sleep (body rest)

In passive sleep, the body is. The heart. We move very . And the brain becomes. This stage of sleep is known as because the brain waves move in a very slow, regular rhythm.

at rest

slows down

little

inactive

slow-wave sleep


Active sleep minds rest

Active sleep (minds rest)

The body several changes: the brain temperature rises, the amount of blood in the brain increases, the body becomes very, very still, and the brain goes from being very to being. The eyes begin to move rapidly. This is a sign---the person is.

goes through

inactive

active

dreaming


Sleep cycle

Sleep cycle

Passive sleep

active sleep

Passive sleep

active sleep


Language points

Language points

  • slow down

    When you reach crossroads, you should slow down your car.

  • be known as

    She is known as the pioneer of nursing.

  • go through

    They have gone through many dangers before they reached the North Pole.


Summary

Physical rest

Passive sleep

slow-wave sleep

psychological rest

Active sleep

dreaming

summary


Unit 11 sleep

Thank you!


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