It acts as the master internal pacemker to which the body clocks in our individual cells are synchronised
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where is the SCN found?
in the hypothalamus
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how is the SCN reset by hte outside world?
light is the primery sinchronizer setting the bodies clock to the right time through a process called photoentrainment
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how does photoentrainment work?
light sensetive cells in the eye saind information about the amount of environemental light to the SCN. The SCN then uses this informantion to the entire circadian system
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