The gonads

Genetic determination of sexual differentiation

Sexual differentiation of the gonads and internal reproductive tracts

Puberty

GnRH and the control of gonadotrophin synthesis and secretion

The gonadotrophins - LH and FSH - and their actions

Endocrine changes in puberty

Precocious sexual development

Delayed puberty

Premature adrenarche

Acne, hair growth and hirsutism

Testicular function

Control of testicular function

Transport, metabolism and actions of androgens

Spermatogenesis

Erection and ejaculation

Ovarian control and the menstrual cycle

Transport, metabolism and actions of ovarian steroids

The ovary - folliculogenesis and oogenesis

Ovulation, menstruation and its problems

Contraception

Infertility

Ovulation induction and assisted conception

Ovarian failure, the menopause and andropause

Hormonal replacement therapy (HRT)