PROGESTERONE ::
It is derived from the corpora -lutea which is formed every month in the ovary after ovulation from its healing scar It is secreted mainly from the ovary but little is secreted from the placenta and adrenal cortex
Functions of progesterone ::
1.Premenstrual stimulation of oestrogens and preparation of the endometrium for menstrual cycle Menstruation occurs when progesterone levels fall
2.Pregnancy is sustained by progesterone secretion It neutralises oxytocin of pituitary and protects pregnancy by preventing uterine contraction
3.Menstruation is inhibited during pregnancy by progesterone
4.Breasts develop under progesterone stimulation
5.Birth passage is relaxed by progesterone and so it widens to facilitate birth
6.Protein metabolism is slowed down with progesterone
7.Oestrogen progesterone and relationship combination may be synergistic opposing or competitive type depending upon the stage in the sex life of a woman
0 Comments