Circadian Rhythms

• Circadian Rhythms

  Biological rhythms are cyclical patterns within biological systems that have evolved in response to environmental influences.
• The two key factors that govern biological rhythms

  endogenous pacemakers, the body's biological clocks, and exogenous zeitgebers, which changes in the environment
• An example of circadian rhythms 


  The sleep-wake cycle, which dictates when humans should be asleep and awake
• What does light do

  light acts as an external cue that tells our body to wake or sleep. Light is first detected by the eye, which then sends messages to the super charismatic nuclei. The SCN then uses this information to coordinate the activity of the entire circadian system