Biological rhythms

Question 1

what are biological rythms

Answer 1

repeated patterns of changes in the body that are regulated by an internal clock

Question 2

what are endogenous pacemakers

Answer 2

internal body clocks that regulate our biological rhythms

Question 3

what are exogenous zeitbegers

Answer 3

external cues that reset our internal biological clocks

Question 4

what is the suprachiasmatic nucleus (SCN)
(master clock)

Answer 4

internal clock that sets the timing when we need to be sleep and when we need to be awake
melatonin helps us feel asleep regulated by SCN

Question 5

what factors affect the exogenous zeitbegers

Answer 5

sound
light

Question 6

Explain Siffres case study

Answer 6

it supports we have an internal biological clock his sleep cycle was 25 hours
he lost track of time he thought it was september but it was august
it shows the need we have for exogenous zeitbegers such as light to regulate our 24 hour sleep wake cycle

Question 7

what are circardian rhythms

Answer 7

a biological rhythm that takes 24 hours to complete a sleep wake cycle