Circadian Rhythms

Question 1

circadian rhythm

Answer 1

• biological rhythm that operates on a 24hr cycle
• regulates bodily processes such as sleep/wake

Question 2

biological rhythms

Answer 2

• distinct patterns of changes in the body activity that conform to cyclical time periods
• can be influenced by internal body clocks or external changes to the environment

Question 3

what factors influence biological rhythms?

Answer 3

1. endogenous pacemakers
2. exogenous zeitgebers

Question 4

endogenous pacemakers

Answer 4

• internal body clocks
• main one: suprachiasmatic nucleus - bundles of nerves in hypothalamus that regulates sleep/wake cycle

Question 5

exogenous zeitgebers

Answer 5

• external factors that entrain our bio rhythms e.g. light
• works alongside EP to ensure we maintain 24 hrs