Question

Define menstruation. Explain the menstrual cycle.

Answer 1

Answer:

hey mate here your answer;

menstrual cycle is the regular natural change that occurs in the female reproductive system ( specifically the uterus and ovaries) that makes pregnancy possible.. the egg is released from ovary around day fourteen in the cycle the thickened lining of the uterus. provided nutrients to an embryo after implementation..

Explanation:

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Answer 2

Answer: If fertilization does not take place, the egg or the ova is shed out of the body. The thick uterine lining that developed to receive the embryo also gets washed away. This is called menstruation

Explanation: An average menstrual cycle extends between a period of 28-30 days from the onset of puberty in girls.

It starts with the end of the previous menstruation.

One of the ovaries develops an egg and release it on the 14th day. This is called ovulation.

The uterus prepares itself for receiving a zygote if fertilization takes place.

The walls of the uterus get richly supplied with blood vessels. It also increases in size.

If the egg is not fertilized between the 14th to 18th day, it is shed out of the body.

As there is no use of the uterine lining, it too comes off the vagina around the 28th day in the form of menstrual flow.