Infradian Rhythms Flashcards
what is infradian rhythm
a type of biological rhythm with a frequency of less than one cycle in 24 hours
what are two example of infradian rhythms
menstruation and seasonal affective disorder
What is the menstruation cycle?
Monthly changes in hormone levels which regulate ovulation
How long is the menstrual cycle not in terms of days?
Between the first day of a woman’s period, when the womb lining is shed to the day before her period
How many days does a mental cycle usually last?
28 days, however it can be between 24 and 35
What happens first in the beginning of each cycle?
The levels of oestrogen increase, which cause the ovary to develop an egg and release it, which is known as ovulation
What is ovulation
When an egg is released
What happened after ovulation?
The hormone progesterone is released, which helps the lining of the womb to grow thicker, which enables to be prepared for pregnancy
What happens if pregnancy is not occurred
The egg is absorbed into the body, and the womb lining comes away and Leaves the body, which is known as menstrual flow, AKA period
What type of system is the menstrual cycle?
Endogenous
Despite the menstrual cycle, being an Endo genius system, how does evidence suggest otherwise
It suggests that exogenous factors influence a cycle
What type of exogenous factor is shown to influence menstrual cycles
Other woman’s cycles
Who did the study about period synchronisation
Stern and McClintock
