The monthly sloughing off of the uterine lining if fertilization does not occur in the female. Occurs between puberty and menopause.
The time between one monthly bleeding and the next - usually around 28 days.
The repeating cycle of change in the membrane lining (endometrium) of the uterus. The endometrium sheds during menstruation. It then regrows, thickens, is kept for several days through ovulation, and sheds at the next menstruation. The average length of the cycle, from the first day of bleeding of one cycle to the first of another, is 28 days. However, the length and character of the cycle vary greatly among women.
The monthly process during which the uterus is readied for implantation of a fertilized ovum. If fertilization does not occur the uterine lining is then shed.
the periodic discharge of blood and mucosal tissue from the uterus, occurring from puberty to menopause in a woman who is not pregnant
Series of events that occurs every month in a woman who is producing reproductive cells (eggs, ova). Each month, an egg matures and is released from the ovaries. If it is fertilised by a sperm it embeds into the thickened wall of the womb and develops into an embryo. If it is not fertilised, then it is released from the womb along with the thickened lining in a process called menstruation (a 'period'). The cycle begins again as another egg begins to mature in the ovaries.
A 28-day hormone sequence that defines the production, ovulation, and menstruation of eggs in the female reproductive system. If fertilization of the egg occurs, the menstrual cycle stops.
A series of cyclical changes that occur in the female genital system each month.
Occurs about every 28 days during a woman's reproductive years. During this cycle an egg (ovum) from the ovary matures and enters the uterus (womb). If the egg is not fertilized and pregnancy does not occur, then the lining of the womb sloughs off and appears as a bloody discharge. The time when the discharge is visible is commonly called a woman's "period."
The cycle of shedding of the uterine lining if an egg is not fertilized. This occurs in women each month for aperiod of 5-7 days.
monthly cycle that begins during puberty for girls, when the egg produced by the ovaries is released through the vagina if it has not been fertilized by a sperm
a recurring cycle (beginning at menarche and ending at menopause) in which the endometrial lining of the uterus prepares for pregnancy; if pregnancy does not occur the lining is shed at menstruation; "the average menstrual cycle is 28 days"
A series of cyclical changes that occur within the female body each month to prepare it for pregnancy; also called the female reproductive cycle
The whole cycle of physiologic changes, from the beginning of one menstrual period to the beginning of another.
A repeating series of changes in the ovaries and endometrium that includes ovulation and about two weeks later the beginning of menstrual bleeding. In most women the cycle averages 28 days, but it may be shorter or longer.
The endometrium is shed during menstruation. It then regrows, thickens, and is maintained until ovulation, and is then shed again at the next menstruation. The average length of the cycle, from the first day of bleeding of one cycle to the first of another, is 28 days. However, the length and pattern of the cycle vary greatly among women.
Normally a 28 day cycle in which ovulation occurs around day 14 and if fertilisation does not occur, results in a bleed around day 28.
The cycle of physiological changes in the ovaries, cervix and endometrium under the influence of the female sex hormones. The length of the menstrual cycle is calculated from the first day of menstrual bleeding to the day before the following menstruation. The term fertility cycle may be used in place of menstrual cycle, emphasising the fertility aspect - see 'Fertility Cycle'
A cycle of approximately one month in the female during which the egg is released from an ovary, the uterus is prepared to receive the fertilised egg and blood and tissue are lost via the vagina if a pregnancy does not occur.
F a fertility cycle lasting on average 28 days and controlled by secretion of certain hormones in a woman's body. The cycle begins with a two-to-five-day period of menstruation (discharge of blood and uterine lining) followed on the 14th day (midpoint) by the release of an egg (ovulation) which travels from one of the ovaries along the fallopian tube to the womb (uterus) where it remains for about a week. If the ovum has not been fertilized by a man's sperm during the few days following ovulation, hormone changes bring about menstruation and a new cycle.
The 4-week period each month when an egg develops in the ovary, the lining of the uterus thickens, and the egg is released. If the egg is not fertilized, the cycle is completed when the lining of the uterus is shed through menstruation (a woman's "period").
The monthly cycle of changes in the ovaries and the lining of the uterus (endometrium), starting with the preparation of an egg for fertilization. When the follicle of the prepared egg in the ovary breaks, it is released for fertilization and ovulation occurs. Unless pregnancy occurs, the cycle ends with the shedding of part of the endometrium, which is menstruation. Although it is actually the end of the physical cycle, the first day of menstrual bleeding is designated as "day 1" of the menstrual cycle in medical parlance.
The recurring secretion of hormones and associated uterine tissue changes; typically 28 days in length. PICTURE
The periodic, 4-weekly sequence of events in sexually mature women which prepares the body for reproduction by producing an egg and growing the endometrial lining of the uterus for implantation. In the absence of fertilisation, the lining and unfertilised egg are shed and the next cycle begins.
The regular growth and expulsion of the endometrium - the lining of the uterus - which occurs if no fertilised egg implants.
Cyclical growth and destruction of the endometrium each month.
The regular growth and expulsion of the lining of the uterus or endometrium, if there is no fertilized egg implanted.
in women, the reproductive cycle, commonly measured as the time interval from the beginning of one menstruation to the beginning of the next.
The period of time measured from the beginning of menstruation (a period), through the series of regularly occurring changes in the ovaries and uterus, until the beginning of the next menstrual period.
the recurrent cycle the female body goes through in response to changes occurring in the uterus, ovaries, cervix, and vagina
Recurring changes in a woman's body, during which hormonal activity causes regular development of follicles and eggs, as well as changes in the lining of the uterus. Sloughing of uterine cells is manifested as bleeding from the vagina at the end of a cycle in which pregnancy has not occurred.
Female reproductive cycle starting at puberty; involve the build-up of the lining of the uterus (womb) for conception, followed by shedding of this lining (menstrual period) if conception does not occur.
Monthly cycle of woman's reproductive system during which an egg is produced (ovulation) and if the egg is not fertilised the lining of the womb is shed as a period. Takes roughly 28 days to complete the cycle.
menstrualis - monthly]. The reproductive cycle of female primates. The cycle consists of four stages: menstrual, where the uterine lining is shed; proliferative, where the endometrium begins to thicken; secretory, where the endometrium thickness is maintained and so becomes suitable for implantation; and ischemic, where if fertilization does not occur, the endometrium begins to break down.
the periodic building up and sloughing off of the lining of the uterus approximately every twenty-eight days
The monthly cycle of hormonal changes from the beginning of one menstrual period to the beginning of the next.
The hormonally controlled monthly cycle of ovulation, egg development, and sloughing off of the uterine lining that causes blood and tissue to be expelled from the uterus through the vagina.
(MEN-stroo-al): The hormone changes that lead up to a woman's having a period. For most women, one cycle takes 28 days.
The monthly cycle of discharge, during a woman's reproductive years, of blood and tissues from the uterus.
The time that elapses between menstrual periods. The average cycle is 28 days, with ovulation usually occurring at the midpoint (around the 14th day).
the period of time between the first day of menstruation and the first day of the subsequent menstrual period
the cycle of physiologic changes in a woman’s body from the beginning of one menstrual period to the beginning of the next. On average, the menstrual cycle is 28 days long. Day 1 of your menstrual cycle begins on the first day of your period. Between day 7 and 11, the lining of your uterus begins to thicken, preparing for a fertilized egg to implant. Around day 14 of a 28-day cycle, changes in hormones cause a mature egg to be released from an ovary and travel down a fallopian tube toward your uterus. It is here that a sperm may fertilize the egg, and if this occurs and the egg attaches to the lining of the uterus, pregnancy occurs. If the egg is not fertilized, the lining of the uterus is shed as a menstrual period, and the cycle begins again.
approximately four-week period during which an ovary produces an egg for fertilization, the body sheds an unfertilized egg along with the lining of the uterus (menstruation), and the ovaries again prepare to produce an egg.
A monthly series of changes that occur in a female's body.
A recurring cycle that occurs monthly in women as the endometrium (lining of the uterus) thickens and prepares for pregnancy. If the egg released by one of the ovaries at ovulation (which occurs about midway through the cycle) is fertilized as it travels from the fallopian tube to the uterus, pregnancy occurs. If the egg is not fertilized, menstruation occurs: the blood-rich endometrium is shed, and the next month's cycle begins again. The first day of menstrual blood flow is considered day 1 of the menstrual cycle. The menstrual cycle is comprised of three phases: the follicular phase, ovulation, and the luteal phase.
The period from onset of one menstrual bleeding (MENSTRUATION) to the next in an ovulating woman or female primate. The menstrual cycle is regulated by endocrine interactions of the HYPOTHALAMUS, the PITUITARY, the ovaries, and the genital tract. The menstrual cycle is divided by OVULATION into two phases. Based on the endocrine status of the OVARY, there is a FOLLICULAR PHASE and a LUTEAL PHASE. Based on the response in the ENDOMETRIUM, the menstrual cycle is divided into a proliferative and a secretory phase.
Periodic (28-day) cycle of growth and decline of uterine mucosa, in the absence of fertilization of an ovum and pregnancy.
The regular process of a fertile woman, producing an egg, preparing the uterine wall for implantation of a fertilised egg, or expelling this lining in the event of no fertilisation.
The regular monthly reproductive cycle of a woman, including the growth of the lining of the uterus, the release of an egg, and if no fertilized egg is implanted, the expulsion of the uterine lining (the menstrual period). The typical cycle lasts 28 to 30 days and is counted from the first day of the period to the first day of the next period.
The menstrual cycle is a recurring cycle of physiological changes in the females of some animal species that is associated with reproductive fertility.