What are the 4 stages of menstrual cycle PPT?
The four phases of the menstrual cycle are menstruation, the follicular phase, ovulation and the luteal phase.
What are the 4 stages of menstrual cycle PDF?
There are four phases: menstruation, the follicular phase, ovulation and the luteal phase.
What is menstrual cycle short note?
The menstrual cycle is the monthly series of changes a woman’s body goes through in preparation for the possibility of pregnancy. Each month, one of the ovaries releases an egg — a process called ovulation. At the same time, hormonal changes prepare the uterus for pregnancy.
What are the 4 main hormones in the female menstrual cycle?
But the main ones are:
- Follicle-stimulating hormone (FSH): Stimulates egg development and the release of oestrogen.
- Luteinising hormone (LH): Stimulates the release of the egg (called ovulation).
- Oestrogen: causes growth of the uterine lining.
- Progesterone: maintains the uterine lining.
Why is the menstrual cycle 28 days?
The human menstrual cycle is only the about same length as the lunar month – it isn’t synchronised with a particular phase. Charles Darwin thought that the 28-day human menstrual cycle was evidence that our ancestors lived on the seashore and needed to synchronise with the tides.
What is the mechanism of menstruation?
Menstruation is the process whereby the superficial or functionalis layer of the endometrium lining the uterine cavity disintegrates and is removed from the uterine lumen towards the end of the luteal phase of a non-pregnant cycle.
What is the physiology of menstruation?
Menstruation is the shedding of the upper portion of the endometrium in response to withdrawal of progesterone following regression of the corpus luteum in the late secretory phase. The initial signals for the menstrual cycle come from the hypothalamus and anterior pituitary gland.
What method is menstrual cycle?
The rhythm method, also called the calendar method or the calendar rhythm method, is a form of natural family planning. To use the rhythm method, you track your menstrual history to predict when you’ll ovulate. This helps you determine when you’re most likely to conceive.
How long is a menstrual cycle?
The length of the menstrual cycle varies from woman to woman, but the average is to have periods every 28 days. Regular cycles that are longer or shorter than this, from 21 to 40 days, are normal.
What is the main role of FSH?
In women, FSH helps control the menstrual cycle and stimulates the growth of eggs in the ovaries. FSH levels in women change throughout the menstrual cycle, with the highest levels happening just before an egg is released by the ovary. This is known as ovulation. In men, FSH helps control the production of sperm.
What is the difference between menstruation and menstrual cycle?
Menstruation is the monthly shedding of the lining of your uterus (more commonly known as the womb). Menstruation is also known by the terms menses, menstrual period, cycle or period.
What is ovulation period?
In an average 28-day menstrual cycle, ovulation typically occurs about 14 days before the start of the next menstrual period. However, each person’s cycle length may be different, and the time between ovulation and the start of the next menstrual period may vary.
What is normal cycle length?
What hormones are released during period?
Estrogen levels rise and fall twice during the menstrual cycle. Estrogen levels rise during the mid-follicular phase and then drop precipitously after ovulation. This is followed by a secondary rise in estrogen levels during the mid-luteal phase with a decrease at the end of the menstrual cycle.
What is secreted during menstruation?
The menstrual cycle is regulated by hormones. Luteinizing hormone and follicle-stimulating hormone, which are produced by the pituitary gland, promote ovulation and stimulate the ovaries to produce estrogen and progesterone.
What is the normal duration of a menstrual cycle?
Why is it called a menstrual cycle?
The term menstruation originated from the Latin word mensis, which means month, and the Greek word mene, which refers to the moon. In ancient times, the menstrual cycle was thought to be related to the moon’s cycle because both cycles last around 29 days.
What is the purpose of menstrual cycle?
As a woman, your period is your body’s way of releasing tissue that it no longer needs. Every month, your body prepares for pregnancy. The lining of your uterus gets thicker as preparation for nurturing a fertilized egg. An egg is released and is ready to be fertilized and settle in the lining of your uterus.
What is normal cycle?
Though the average cycle is 28 days long, anything between 21 and 45 days is considered normal. That’s a 24-day difference. For the first year or two after menstruation begins, women tend to have longer cycles that don’t start at the same time every month. Older women often have shorter, more consistent cycles.
Why is it important to study menstrual cycle?
Studying the impact of menstruation on mental health, social function and economic health is vital. This research will inform policy makers and drive real change in our society to create a diverse, equal society where we can all reach our full potential.
What is the role of LH?
LH is made by your pituitary gland, a small gland located underneath the brain. LH plays an important role in sexual development and functioning. In women, LH helps control the menstrual cycle. It also triggers the release of an egg from the ovary.
What type of hormone is FSH?
Follicle-stimulating hormone (FSH) is a glycoprotein gonadotropin secreted by the anterior pituitary in response to gonadotropin-releasing hormone (GnRH) released by the hypothalamus. The pituitary gland also secretes luteinizing hormone (LH), another gonadotropin.
What is the importance of menstrual cycle?
The purpose of the menstrual cycle is to prepare the body for a possible pregnancy. During the menstrual cycle, a mature egg is produced by the ovaries and the lining of the uterus thickens to support a possible pregnancy.
Can u get pregnant on your period?
Can you get pregnant if you have sex while you are in your period? Yes — it’s possible to get pregnant if you have unprotected sex during your period. However, it’s less common for this to happen.
How long can sperm live?
five days
Ejaculated sperm remain viable for several days within the female reproductive tract. Fertilization is possible as long as the sperm remain alive — up to five days. Sperm can also be preserved for decades when semen is frozen.