Biological Rhythms

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Across
  1. 1. This German word means ‘time giver’
  2. 6. In addition to caffeine this has been found to make jet lag symptoms worse
  3. 8. The stage in our lives when we sleep the most, sleeping around 16 hours a day
  4. 11. This hormone is secreted by the pineal gland and is involved in controlling our sleep-wake cycle
  5. 12. Hibernation is an example of this type of rhythm
  6. 14. Rhythms with more than one cycle within a 24 hour period
  7. 15. Stephan and Zucker (1972) damaged the SCN of these animals
  8. 16. The number of NREM stages
Down
  1. 2. Internal body clocks
  2. 3. The stage of sleep in which we do most of our dreaming
  3. 4. Rhythms with a duration of about 24 hours
  4. 5. Phase …………. is easier to adjust to
  5. 7. The main internal body clock, found in the brain
  6. 9. The number of minutes an average complete sleep cycle takes
  7. 10. Biological rhythms with a cycle length of more than a day
  8. 13. Siffre demonstrated the importance of endogenous pacemakers by living in a…