which hormone causes menses?

Answer 1

Only human beings and the great apes experience a true menstrual cycle. Most placental mammals experience estrus instead. The menstrual cycle is under the control of the reproductive hormone system and is necessary for reproduction. In women, menstrual cycles occur typically on a monthly basis between puberty and menopause.

During the menstrual cycle, the sexually mature female body builds up the lining of the uterus with gradually increasing amounts of estrogen, and when this hormone reaches a critical level, estradiol is produced, and shortly thereafterward there is the stimulation of the ovaries with Follicle Stimulating Hormone (FSH), and luteinizing hormone (LH). Follicles begin developing, and within a few days one "matures" into an ovum or egg. The ovary then releases this egg, (or occasionally two, which might result in dizygotic, or fraternal/non-identical, twins) at the time of ovulation. (Identical twins form from a single egg, as a result of the zygote splitting.) The lining of the uterus, the endometrium, peaks shortly there afterward in a synchronised fashion. After ovulation, this lining changes to prepare for potential conception and implantation of the fertilized egg to establish a pregnancy. The hormone progesterone rises after ovulation, and peaks shortly thereafter.

If fertilization and pregnancy do not ensue, the uterus sheds the lining, culminating with menstruation, which marks the low point for estrogen activity. This manifests itself to the outer world in the form of the menses (also menstruum): essentially part of the endometrium and blood products that pass out of the body through the vagina. Although this is commonly referred to as blood, it differs in composition from venous blood. Menstrual cycles are counted from the beginning of menstruation, because this is an outside sign that corresponds closely with the hormonal cycle. Menses, or bleeding and other menstrual signs may end at different points in the new cycle.

Common usage refers to menstruation and menses as a period. This bleeding serves as a sign that a woman has not become pregnant. (However, this cannot be taken as certainty, as sometimes there is some bleeding in early pregnancy.) During the reproductive years, failure to menstruate may provide the first indication to a woman that she may have become pregnant. A woman might say that her "period is late" when an expected menstruation has not started and she might have become pregnant.

Menstruation forms a normal part of a natural cyclic process occurring in healthy women between puberty and the end of the reproductive years. The onset of menstruation, known as menarche, occurs at an average age of 12, but is normal anywhere between 8 and 16. Factors such as heredity, diet and overall health can accelerate or delay the onset of menarche

The condition precocious puberty has caused menstruation to occur in girls as young as 8 months old. Some women experience their first period in their late teens. The last period, menopause, usually occurs between the ages of 45 and 55. Deviations from this pattern deserve medical attention. Amenorrhea refers to a prolonged absence of menses during the reproductive years of a woman for reasons other than pregnancy. For example, women with very low body fat, such as athletes, may cease to menstruate. The presence of menstruation does not prove that ovulation took place; women who do not ovulate may have menstrual cycles. Those anovulatory cycles tend to take place less regularly and show greater variation in cycle length. In addition, the absence of menstruation also does not prove that ovulation did take place, because hormone disruptions in non-pregnant women can suppress bleeding on occasion.

Answer 2

several. you have your follicle-stimulating hormone and your luteneizing hormone. they both rise in respone to either low progesterone and estrogen levels to signal your hypothalamus to release either more pregesterone or estrogen as indicated by which period of your cycle you are in. And then when both estrogen and progesterone rises, your ovulation begins until your egg cell is carried into your uterus and waits for a sperm cell. as soon as your egg cell is in the uterus, your estrogen count begins to decrease and after three days without a sperm your egg cell will be expelled as your menstrual flow.

SO BASICALLY THERE ARE SEVERAL THAT MAKES YOU HAVE YOUR MENSES, BUT IT IS THE LACK OF IT THAT RESULTS INTO THE RELEASE OF YOUR MENSTRUAL BLOOD.

Answer 3

Estrogen and progesterone work jointly to build up the uterine lining and periodically shed it every month in the form of the menstrual flow. These two female hormones influence other processes in the female body, such as pregnancy, puberty and menopause. Also, they protect against certain other diseases such as osteoporosis, heart disease and some cancers. They contribute to the shape of the woman's body, the fine texture of her skin, and the growth of her hair.

Answer 4

it can come early but not just in a 10 day it takes 20 day atleast to come again

Answer 5

My guess would be estrogen.