L11- Biological rhythms

Question 1

Biological rhythms

Answer 1

• distinct patterns of changes in body activity that follow cyclical time periods
• allow organisms to adapt to cycle of day and night and appear to control nearly all behaviours and physiological processes
• evidence to suggest rhythms are inherited- each individual pattern of rhythm with little variation over time + environmental factors have effect on rhythms

Question 2

what are biological rhythms controlled by

Answer 2

• internal mechanisms - endogenous pacemakers
• external changes in environment- exogenous zeitgeibers

Question 3

3 main biological rhythms

Answer 3

1. circadian rhytms (24h)
2. infradian rhythms ( >24h)
3. ultradian rhythm (<24h)

Question 3

3 main biological rhythms

Answer 3

1. circadian rhytms (24h)
2. infradian rhythms ( >24h)
3. ultradian rhythm (<24h)