the menstrual cycle

Menstruation and Menstrual Cycle - At about the age of 10 to 13 years, the ovaries of females are stimulated by the follicle stimulating hormone (FSH) of the pituitary. This is called the onset of puberty and is accompanied by release of hormones oestrogen and progesterone. Thes..

Menstruation and Menstrual Cycle - At about the age of 10 to 13 years, the ovaries of females are stimulated by the follicle stimulating hormone (FSH) of the pituitary. This is called the onset of puberty and is accompanied by release of hormones oestrogen and progesterone. Thes..

At about the age of 10 to 13 years, the ovaries of females are stimulated by the follicle stimulating hormone (FSH) of the pituitary. This is called the onset of puberty and is accompanied by release of hormones oestrogen and progesterone. These hormones control the production of ova or eggs ..

At about the age of 10 to 13 years, the ovaries of females are stimulated by the follicle stimulating hormone (FSH) of the pituitary. This is called the onset of puberty and is accompanied by release of hormones oestrogen and progesteron..

In women, reproductive phase begins with the onset of menses at about the age of 13 years. It ends with its cessation (menopause) at about the age of 45 - 49 years. During this reproductive period, the ovaries and the female reproductive tract undergo a series of cyclic changes which are primarily ..

The cyclic changes in the ovary and uterus are under the control of estrogen and progesterone hormones whose secretion is under the control of gonadotropic hormones secreted by anterior pituitar..

It lasts for about 3 - 5 days and extends from the 1 s t - 4 t h day of the menstrual cycle. When fertilisation of ovum does not take place, the corpus luteum starts degenerating. The level of progesterone in the blood starts decreasing. The uterine tissues fail to be maintained..

The length of the menstrual cycle varies widely in women, but on an average it extends to about 28 days. It is absent during pregnancy, may be suppressed during lactation and permanently stops at menopause. The menstrual cycle is divided into 4 phases. Follic..

Puberty sets in between 10 - 14 years. It is characterised by the beginning of ovulation and the menstrual cycle. It is initiated by the hormone estrogen. It is characterised by an enlargement of breasts, broadening of the hip region, pubic and axillary hair growth, increase in ..

i) Stimulate the female reproductive tract to grow to full size and become functional. ii) They also stimulate the differentiation of ova in the ovary. iii) They stimulate the development of accessory sex characters such as enlargement of breasts, broadening of pelvis, growth of pubic and axillary..