what is menstural cycle? Describe it in brief
Answers
Answer:
when the egg released from ovary is not fertilised along with the blood vessels sheds of with the egg... this process continues to 3 to 7 or 5 days...
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Answer:
✅MENSTRUAL CYCLE–
• Female reproductive system undergoes some changes at puberty and those changes repeat at the interval of every 29-30 days. These repetitive changes are called as menstrual cycle.
• The natural process of menstrual cycle is controlled by four hormones- Follical Stimulating Hormone (FSH), Luteinizing Hormone(LH), Estrogen, Progesterone.
• Under the effect of FSH one of the follicles in the ovary starts to develop.
• The developing follicle secretes estrogen.
• The estrogen causes development or regeneration of the endometrium of the uterus.
• Developing follicle completes its development and bursts under the influence of LH and oocyte is released. This is called as ovulation.
• The remaining tissue of the burst follicle forms corpus luteum which secretes progesterone.
• Under the influence of progesterone, the endometrial glands secrete their secretions and endometrium becomes ready for implantation of embryo.
• If the oocyte is not fertilised, the corpus luteum becomes inactive and transforms into corpus albicans.
• Corpus albicans stops the secretion of estrogen and progesterone.
• In the absence of these hormones, the endometrium degenerates. The degenerating endometrium and unfertilized ovum are discarded out through vagina in the form of continuous bleeding. This is called as menstruation.