NUR 211 exam 1 Questions With Complete Answers.
the study of sleep - Somnology what are the benefits of sleep? - -help people cope with daily stressors -prevents fatigue -conserves energy -facilitates healing of damaged tissue/wounds -restores mind and body what is NREM? - non-rapid eye movements (stages 1-4) what is REM? - rapid eye movement what are the 4 staged of NREM sleep? - -Stage 1: very light sleep/only lasts a few minutes -Stage 2: light sleep/ lasts 10-15 minutes/eye movements stop and brain waves slow -Stage 3 & 4: deeper sleep/ heart and respiratory rates drop 20%-30% below what is exhibited during waking hours/difficult to arouse/sleepwalking, talking, night terrors/ Stage 4 is characterized by slow delta waves/ no eye movement or muscle activity/if awakened the sleeper may be groggy and disoriented/ peak of growth hormone secretion/tissue repair/restorative what is REM sleep? - Phase at the end of each 90 minute sleep cycle that lasts approximately 5-30 minutes/ usually spend about 20% of sleep in REM/ rapid eye movement/ vivid full color dreaming/ difficult to arouse/ becomes longer as the night progresses and individual becomes more rested why is REM sleep important for cognitive restoration? - -memory storage and learning -brain filters stored information about the day's activities infants spend __% of their sleep in REM - 50%Adults spend about __% of their sleep in REM - 20%
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