The Pituitary gland is situated at the base of the brain and is responsible for the release of LH and FSH as well as thyroid stimulating hormone. It in turn is triggered by the...

Oestrogen is produced in the follicular phase of the menstrual cycle as the ovarian follicles begin to ripen eggs. It is the ever increasing amounts of oestrogen produced at this time that eventually trigger...

The latter half of the menstrual cycle during which the corpus luteum produces progesterone to maintain the endometrial lining of the uterus in the hope of a fertilised egg. When the corpus luteum stops...

Oestrogen triggers a surge of LH around mid-cycle, which in turn causes the strongest egg to burst through the ovary wall. For more information see: The Female Reproductive System Ovulation Predictors Blood tests Polycystic Ovary Syndrome

Ths is located is the brain. The hypothalmus sits above the Pituitary gland and tells the Pituitary when to start releasing hormones. For more information see: The Female Reproductive System Pituitary gland  

This is the hormone that indicates you're pregnant. It is produced once the embryo is implanted and - in order for a positive pregnancy test - there must be sufficient levels for it to...

FSH (Follicle Stimulating Hormone) You start generating FSH during your period in response to a signal from the Pituitary Gland. It prompts follicles in both ovaries to begin maturing eggs. High levels of FSH in the...

Follicles are fluid-filled sacs on the ovaries that enlarge as eggs ripen. Each follicle contains an immature egg. For more information see: How it works Corpus Luteum