Biological Rhythms

Biological Rhythms: Circadian rhythms Animal research and justification

Aims To know the biological clock in control of the Circadian Rhythm To understand the difference between Endogeous Pacemakers and Exogenous Zeitgebers To be able to evaluate animal research ethics/studies in regards RWA and justification

Biorhythms • A biological rhythm is any change in a biological activity that repeats periodically. Often synchronised: Daily, Monthly and annual. Circadian = 24 hour cycle; S/W cycle Infradian = 24+ hour cycle; Menstrual cycle Ultradian =