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How is the menstrual cycle an example of the body's use of negative feedback?
The menstrual cycle is regulated by negative feedback involving hormones such as estrogen and progesterone. When hormone levels drop, it triggers the release of other hormones to stimulate the uterine lining shedding (menstruation). Once hormone levels rise again, it signals the end of menstruation and the start of a new cycle, maintaining balance through negative feedback mechanisms.
What stimulates the smooth muscle of the uterus?
Stimulation of the cervix is what triggers labor through a hormone called oxytocin.
When happens when a girl has her menstrual cycles?
Every month in a normal menstrual cycle, the ovaries prepare for the release of an egg or ova. At the same time, the lining of your uterus thickens with blood and tissue to prepare for a possible pregnancy. If male sperm are not united with the ova around the time of ovulation, the lining of the uterus is shed and you have your menstrual period. Between the time of ovulation and the time of your menstrual period, you will have about 10-14 days of what is called the luteal phase (pronounced loo-tee-al). During this time, the follicle or house that the ova was in before it was released (the corpus luteum) continues to produce luteinizing hormone. When this hormone drops off, you have your period. You may even notice that mid-way through your cycle you experience a slight twinging pain to the right or the left of your abdomen. If you do, what you are experiencing is the actual moment of ovulation, which is pretty cool!
What is the most fertile time in a womens menstrual cycle?
One view: when it starts Another view - The most fertile time in a woman's menstrual cycle is around the time that she ovulates. This is usually around day 12-14 of a 28 day cycle but if your cycle is shorter or longer then this may change. A good way to see if/when you ovulate is to use a fertility monitor / ovulation predictor such as Clearblue which detects when your LH (luteinizing hormone) level surges, usually indicating imminent ovulation.
How are ovulation fertilization and menstruation related?
Menstruation is the shedding of tissue and blood from the lining of the womb that occurs at the beginning of menstrual cycle. Menstrual cycle is the series of changes a woman's body goes through to prepare for a pregnancy. Ovulation is a part of menstrual cycle when a mature egg is released from the ovary, pushed down the fallopian tube and is available to be fertilized. If you have intercourse during ovulation you can get pregnant. So, fertilization means that sperm has gotten to and entered the mature egg.
What is follicular wave?
during the menstrual cycle, follicular wave is where the time it starts as a tertiary stage follicles to ovulation. the follicular wave consists of each cycle a women (female) goes through the menstrual cycle.
What is the hormone that makes the cervical mucus viscous?
Progesterone is the hormone that makes cervical mucus viscous, thick, and sticky, making it difficult for sperm to swim through the cervix. This helps prevent fertilization during certain times in a woman's menstrual cycle.
Can sperm be present in a woman after a menstrual cycle?
The menstrual cycle is the entire reproductive cycle of a woman, from ovulation through to menstruation then through to ovulation again - sperm can remain in the vagina at any stage of the menstrual cycle. Although it's only during the fertile phase, around a week before ovulation, when sperm could swim up through into the uterus, otherwise it will remain in the vaginal canal and be flushed out along with discharge.
Where are eggs are swept into?
If we are talking about human eggs being swept away at the end of ovulation, The egg exits the body with the menstrual flow through the Vagina.
How does estrogen prevent ovulation?
Estrogen prevents ovulation primarily through its regulatory effects on the hypothalamus and pituitary gland. It inhibits the release of gonadotropin-releasing hormone (GnRH), which decreases the secretion of luteinizing hormone (LH) and follicle-stimulating hormone (FSH). This suppression of LH and FSH prevents the ovarian follicles from maturing and ovulating. Additionally, high levels of estrogen can create a negative feedback loop, further reducing the likelihood of ovulation.
When can human fertilization take place?
The ovum can be fertilized for about two days after ovulation in the female human, on average ovulation takes place every 28 days, It can be longer or shorter depending on the individual woman. Ovulation takes place half way through a woman's menstrual cycle. in other word if she starts her menstrual bleeding every 28 days, then she ovulates 14 days after the bleeding starts.
A hormone must target cells that have a receptor for it?
Yes, in order for a hormone to exert its effects on a cell, the cell must have specific receptors that can recognize and bind to the hormone. Once the hormone binds to its receptor on the target cell, it triggers a series of cellular responses that lead to the hormone's desired effects.
