The Brain Stem: Sleep, Circadian Rhythms , Homeostasis ( Part 2) 0.0 / 5 ? BiologySleep disorders /UniversityNone Created by: AnjelalaCreated on: 15-12-17 03:54 What is lucid dreaming? -Aware that you're asleep and dreaming 1 of 19 What are night terrors? - intense anxiety experience, person awakens screaming in terror. 2 of 19 What is Insomnia? -sleep disorder associated with inadequate sleep 3 of 19 What can cause insomnia? -many factors like stress and medications - result of other disorders like depression ,anxiety. 4 of 19 What is sleep apnea? - sleep disorder, unable to breath whilst sleeping for prolonged period. 5 of 19 What can cause sleep apnea? - deterioration of brain mechanisms that control breathing - obesity - genetics - hormones - old age 6 of 19 What are the consequences of sleep apnea? -Tiredness during day , depression . impaired attention, possible heart issues 7 of 19 What is Narcolepsy? -Frequent unexpected periods of sleepiness -gradual/sudden sleepiness attack -cataplexy (muscle weakness) -hypnagogic hallucinations 8 of 19 What causes Narcolepsy? -Lack of hypothalamic cells -Runs in families 9 of 19 Name 4 sleep disorders? 1)sleep apnea 2)Insomnia 3)Narcolepsy 4)Night terrors 10 of 19 state the three functions of sleep ? 1) Memory consolidation 2)Energy Conservation 3)Restoration of brain and body 11 of 19 How is energy conserved during sleep ? -Decrease in muscle activity -Decrease in body temperature 12 of 19 What is Circadian Rhythms? Circadian Rhythms describe daily rhythms like sleep. 13 of 19 State the 5 circadian rhythms ? 1) Waking/sleeping 2)Frequency of eating/drinking 3)Secretion of hormones 4)Volume of urination 5)Body temperature 14 of 19 State some examples of Zeitgebers ? 1) Sunlight 2)Meals 3)Temperature of environment 4)Exercise 15 of 19 What are zeitgebers? Zeitgebers are stimulus that can reset circadian rhythm 16 of 19 How is SCN relevant to circadian rhythm ? -Suprachiasmatic nucleus - If destroyed it disrupts the circadian rhythms 17 of 19 Where is Suprachiasmatic nucleus located? -Above the optic chiasm - It is part of the hypothalamus 18 of 19 What are the functions of the Suprachiasmatic nucleus ? 1)Controls activity levels in other brain areas to regulate waking/sleeping 2) Regulates pineal gland 19 of 19
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