Sub-section 3: Rhythms

Question 1

Name three types of biological rhythms

Answer 1

Circadian
Infradian
Ultradian

Question 2

Who re-surfaced from a cave in mid-September 1962 believing it to be mid-August?

Answer 2

Michael Siffre

Question 3

Who found that participants living in a WW2 bunker for 4 weeks had a circadian rhythm between 24-25 hours?

Answer 3

Aschoff and Weaver

Question 4

Who sped up a clock for a 22 hour day and found participants could not cope with the change?

Answer 4

Folkard et al

Question 5

Who found that they could alter women’s menstrual cycles by rubbing the pheromones of another woman onto their top lip?

Answer 5

Stern and McClintock

Question 6

What is the name for external factors that have an effect on biological rhythms?

Answer 6

Exogenous zeitgebers

Question 7

What is the name for internal factors that have an effect on biological rhythms?

Answer 7

Endogenous pacemakers

Question 8

What is the name of the nucleus in the hypothalamus responsible for maintaining circadian rhythms?

Answer 8

Suprachiasmatic nucleus

Question 9

Who found that they could alter sleep patterns of participants by shining lights on the backs of their knees?

Answer 9

Campbell and Murphy

Question 10

What hormone is responsible for sleep and where is it secreted from?

Answer 10

Melatonin, it is from the pineal gland.