biological rhythms

• biological rhythm


  cyclical change in the way that biological systems behave
• how do these rhythms evolve?

  due to cyclical changes in the environment

  > day & night

  > winter & summer
• types of biological rhythm

  -circadian rhythm

  -ultradian rhythm

  -infradian rhythm
• internal factors name

  endogenous pacemakers
• external factors name

  exogenous zeitgebers