hormones Flashcards
what is spermatogenesis
continuous process of the production of sperm. controlled by luteinising hormone (LH) and folicle stimulation hormone (FSH)
what is oogenesis?
production of an ovum as part of the menstrual cycle. controlled by LH and FSH
what happens in spermatogenesis?
- LH stimulates testosterone to be produced
- causes production and maturation of sperm
- inhibin is produced by sertoli cells and inhibits FSH to stop spermatogenesis
what happens in oogenesis?
- FSH stimulates one or more folicles to mature
- LH stimulates mature folicle to produce more oestrogen and inhibit LH and FSH production
- oestrogen and inhibin from mature follicle inhibits secretion of FSH so no more folicles mature
- however, increase in oestrogen levels stimulate LH and FSH production leading to ovulation
what is the Gondatropin releasing hormone (GnRH)
secreted by hypothalamus and controls reproductive hormones. stimulates production of LH and FSH
what is oestrogen?
rebuilds uterine lining after menstruation. stimulates release of LH. by the pituitary
what is progesterone?
maintains lining of uterus ready for a fertilised egg. inhibits production of FSH by pituitary. produced mostly by corpus lectum, some by ovaries
what is testosterone?
produced by testes, enables development of sex organ tissues and secondary sexual characteristics
what is androgen-binding hormone?
produced by seminiferous tubules, helps maintain high concentrations of T in testes
what are prostaglandins?
help with uterine contraction, produced by most cells
what is oxytocin?
produced by hypothalamus, released by pituitary gland. helps stimulate uterine contractions and lactation
what is cortisol?
considered the stress hormone, is linked to increased maternal interest in offspring
