Discuss the role of endogenous pacemakers and exogenous zeitgebers in circadian rhythms.

essay on role of  endogenous pacemakers and exogenous zeitgebers in circadian rhythms.

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  • Created by: Annalise
  • Created on: 06-02-12 13:30

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Annalise Taylor




Discuss the role of endogenous pacemakers and exogenous zeitgebers in circadian rhythms.

We have an internal body clock the lasts the duration of a day (24 hours), which is therefore able to
control the circadian rhythm. As the biological body clock is controlled inside it is known as…

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Annalise Taylor




Czeisler's research shows that there are external variables such as light and temperature that affect
our sleep-wake cycle. So if our body clock is reset by bright light how does our body do this?

One of our internal pacemakers is in the SN. It receives information from the…

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Annalise Taylor




controlling our sleep-wake cycle as our pineal gland is sensitive to light and secretes melatonin and
helps us keep in time with the outside world of being typically awake during light and asleep at night.
Society has and will keep on changing we cannot rely on light to…

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