What Causes Menstruation Problems?
Menstruation is the part of the menstrual cycle, the process which helps a woman’s body gets ready for the possibility of pregnancy each month. The average cycle is 28 days long and starts on the first day of a period. The menstrual cycle can range from 21 days to 35 days. The brain, pituitary gland, uterus, cervix, ovaries, fallopian tubes and vagina all work together to make the menstrual cycle occur.
The ovaries produce two important hormones, progesterone and estrogen. The pituitary gland also produces hormones, follicle-stimulating hormone (FSH) and luteinizing hormone (LH). At the beginning of the menstrual cycle, levels of estrogen rise which causes the lining of the uterus to grow and thicken. An egg (ovum) starts to mature in one of the ovaries.
Around day 14 of a normal 28-day cycle (middle of the cycle), the egg leaves the ovary and this process is known as ovulation. During the second half of the menstrual cycle, the egg starts to pass through the fallopian tube to the uterus.
Levels of progesterone, the dominant hormone in the second half of the cycle rise and prepare the uterine lining for pregnancy. If the egg becomes fertilized by a sperm cell and attaches itself to the uterine wall, then pregnancy occurs. If pregnancy does not occur, estrogen and progesterone levels drop, and the extra thick lining of the uterus is shed. This shedding of the lining of the uterus occurs during the menstrual period.
Tags: Menstruation, Menstruation causes
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