Biological rhythms: Circadian rhythms

Question 1

What are biological rhythms?

Answer 1

A change in body processes or behaviour in response to cyclic changes in the environment

Question 2

What are the 2 things biological rhythms are controlled by?

Answer 2

• body’s internal biological ‘clock’ (endogenous pacemakers)
• external changes in the environment ( exogenous zeitgebers)

Question 3

What are circadian rhythms?

Answer 3

A type of biological rhythm that lasts for around 24 hours

Question 4

What are 2 examples of circadian rhythms?

Answer 4

sleep/wake cycle & core body temperature