Physiology of Men and Women Flashcards
(40 cards)
What does LH stand for?
Luteinising hormone
Functions of the ovary
Production of the egg
Production of oestrogen and progesterone
What does negative feedback allow?
Only one egg production per month
Which hormone causes positive feedback?
Oestrogen
What hormones initiate the growth of new follicles?
FSH and LH
What part of the cycle is an egg released?
Mid cycle
What happens in the follicular phase?
When an egg is released, LH surges and a positive feedback occurs which releases the egg
After the egg is released, the follicles dont have to grow anymore as negative feedback is in place
What happens in the luteal phase?
The follicle which has already released an egg forms a structure called the corpeus luteum which releases progesterone
The progesterone causes pregnancy changes in the womb
The corpeus luteum matures
What happens to the Corpeus luteum when there is no pregnancy?
Corpeus luteum disintegrates and turns from yellow to white - this is called corpus albicans
In the menstrual cycle, the uterus runs synchronously with the….
Ovaries
What happens in the proliferative stage of the womb?
Oestrogen is secreted which thickens and proliferates the lining of the womb
Function of oestrogen in the womb
Thickens and proliferates the lining of the womb
Function of progesterone in the womb
Dilates blood vessels
After what day, if there is no pregnancy, do the hormones drop?
Day 26
What happens when the hormones drop?
Menstrual bleed
The number of eggs you are born with is prefixed at how long gestation?
5 months in mother’s tummy
Number of eggs born with
2 million
How many eggs are of use to us?
400
Stem cells in the ovaries are called….
Oogonium
Extragenetic material released in oogenesis is called…..
Polar bodies
Menarchy definition
Period starting
Biggest factor affecting fertility
Age
Fertility has a dramatic drop after what age?
35
What can occur in your period before menopause?
Irregular cycles
