The Mestrual Cycle Flashcards
What is menstruation?
The break down of the uterus lining
During what days does menstruation occur?
1-5
What happens to the uterus during the second week?
The lining of the uterus gradually builds up
What is ovulation?
The release of an egg from an ovary
What day does ovulation occur?
Around day 14
During days 14-16, what occurs?
Fertilisation
What happens to the uterus if fertilisation occurs?
The thick lining is maintained and menstruation does not happen
What is contraception?
The prevention of fertilisation
What are examples of hormonal contraception?
Hormone pills
Implants
Injections
How do hormonal contraception work?
Releases hormones to prevent ovulation and thickens mucus at the cervix preventing sperm from passing?
What hormone is released to prevent ovulation?
Progesterone
What are examples of barrier methods?
Male and female condoms
Diaphragm
Caps and sponges
How do barrier methods work?
Stop sperm from reaching the eggs
What 4 hormones control the menstrual cycle?
Oestrogen
Progesterone
FSH
LH
Where does FSH and LH come from?
The pituitary gland near the brain
What does high levels of oestrogen stimulate?
The release of more LH
What does increasing progesterone inhibit?
The release of FSH and LH
What does low levels of progesterone allow?
FSH to be released
What doe LH surge trigger?
Ovulation
What does maturing follicle stimulate?
Oestrogen production
What does corpus luteum release?
Progesterone
What does increasing oestrogen do?
Thicken walls
What does falling levels of oestrogen and progesterone trigger?
Menstruation
What does IVF stand for?
In-Vitro fertilisation
