医学英语睡眠Capter 3_Sleep and Its Health Impact.ppt

* 1. How much time of our lives do we spend sleeping? 2. How many stages can our sleep divide into? What are they? 3. What physiological activities occur during the phase of rapid eye movement? 4. What physiological activities occur when we sleep? 5. Why does a good night sleep matter? 6. What adverse consequences may lack of sleep lead to？ 7. What is it that sends messages telling the body to prepare for rest? 8. Why do we tend to sleep more in winter? 9. What are the symptoms of seasonal affective disorder (SAD)? What can be done to reduce these symptoms? 10. What factors affect how much sleep people should get? 11. Why, according to the author, do people in today’s society get less sleep than the previous generation? 12. What is good sleep hygiene that experts advocate? Reading Comprehension Complete each statement or give a short answer to each question in no more than six words according to the article. 1. The fact that we spend about one-third of our lives sleeping shows that sleep is __________ ____________________. 2. Stages one and two of sleep are ____________ while stages three and four are _____________. 3. During the phase of rapid eye movement, a person is likely to _______________________. 4. During the sleep the body _________________ _____________ and cells_________________. a fundamental need light sleep deep sleep have vivid dreams circulates nutrients and hormones regenerates 5. In addition to increasing brain function, a good night sleep promotes _____________________ _________________. 6. The adverse consequences of sleeplessness include __________________________________ ____________. 7. Located in the hypothalamus is _____________ ______, from which messages are sent to tell the body to prepare for the rest. faster recovery from injury and illness