Question

explain menstrual cycle

Answer 1

The menstrual cycle is the regular natural change that occurs in the female reproductive system (specifically the uterus and ovaries) that makes pregnancy possible. The cycle is required for the production of oocytes, and for the preparation of the uterus for pregnancy...

The first period usually begins between twelve and fifteen years of age, a point in time known as menarche. They may occasionally start as early as eight, and this onset may still be normal. The average age of the first period is generally later in the developing world and earlier in developed world. The typical length of time between the first day of one period and the first day of the next is 21 to 45 days in young women and 21 to 35 days in adults  Menstruation stops occurring after menopause which usually occurs between 45 and 55 years of age. Bleeding usually lasts around 2 to 7 days.....

Answer 2

Dear Student,

◆ Menstrual cycle -

• Menstrual cycle is monthly cycle of changes in the ovaries and the endometrium which makes pregnancy possible.

There are 4 phases of menstrual cycle -

(1) Follicular phase -

• duration - day 6 to day 13
• follicles release estrogen causing thickening of endometrium.

(2) Ovulatory phase -

• occurs at - day 14
• follicle ruptures and develop into corpus luteum.

(3) Luteal phase -

• duration - day 15 to day 28
• endometrium is thickened due to release of estrogen & progesterone from corlus luteum.

(4) Menstrual phase -

• duration - day 1 to day 5
• corpus luteum degenerates and endometrium is sloughed off causing per vaginal bleeding & mucous discharge.

Also read : Why does menstruation occur ?

https://brainly.in/question/6028843

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