Some Definitions
Anovulation Absence of ovulation
Anovulatory Cycle A menstrual cycle in which ovulation does not occur
Catamenia Another word for menses or menstruation
Cervical Mucus Fluid secreted by the cervix. Its main role is to assist sperm in living for several days and to help transport sperm to the fallopian tubes. Cervix Opening into the uterus
Cilia Hair-like projections inside the fallopian tubes that move the egg up the tubes into the uterus.
Corpus Luteum A yellow mass of cells that forms from the follicle that releases the egg at ovulation. The corpus luteum produces the hormone progesterone that is important for preparing the endometrium for implantation of the fertilized egg.
C-section; Caesarean Delivery of a baby by surgical incision through the abdominal wall and uterus. It is believed that Julius Caesar was born this way.
Dysmenorrhea Pain during menstruation that occurs in the lower abdomen just before or during menstruation; menstrual cramps.
Primary dysmenorrhea is menstrual pain occurring because of one's menstrual period and not as a result of a disease. It results from the production of prostaglandins, which are made by cells in the inner lining of the uterus. Prostaglandins make the uterine muscles contract to help the uterus shed the endometrial lining that has built up during the menstrual cycle.
Secondary dysmenorrhea is menstrual pain that is the result of an underlying medical condition or disease of the uterus, fallopian tubes or ovaries. The pain appears similar to menstrual cramps, but often last longer than the menstrual period, or may occur at other times of the month when one is not menstruating
Endometriosis A condition whereby endometrial tissue that should normally grow inside the uterus instead abnormally grows outside the uterus, in the abdominal cavity and often on other reproductive organs such as on the ovaries, fallopian tubes.
Endometrium Mucous membrane tissue lining of the uterus. The endometrial lining grows thicker during the month and is shed monthly during the menstrual period if pregnancy does not occur.
Estrogen Female hormone produced by the ovaries that promote the growth and maintenance of the female reproductive system.
Fallopian Tube The fallopian tube transports the egg from the ovary to the uterus. There are two fallopian tubes, one connecting to the right ovary, the other to the left ovary. Generally, fertilization (joining of female egg with male sperm) takes place within the Fallopian tubes.
Named after Gabriele Falloppio, a 16th-century Italian anatomist, who was the first person to accurately describe these uterine tubes.
Follicle An egg sac in the ovary inside which an ovum (egg) will mature.
Follicle Stimulating Hormone (FSH) The hormone produced by the pituitary gland that stimulates the growth of eggs in the ovaries.
Follicular Phase The first phase of the menstrual cycle. During this phase, a follicle containing an egg develops in the ovary.
Luteal Phase The third phase of the menstrual cycle. Ovulation has occurred, and the corpus luteum produces progesterone primarily to maintain the thickness of the endometrium lining in the uterus in the event that fertilization has occurred. If fertilization has not occurred, progesterone production stops and the endometrium lining is shed during menstruation.
Luteinizing Hormone (LH) Hormone released by the pituitary gland in the brain that triggers the onset of ovulation and prepares the uterus for implantation of a fertilized egg.
Menarche A girl's first menstrual period
Menopause The time in a women's life when menstruation permanently stops. Sometimes referred to as the "change of life". Occurs due to the decrease in production of estrogen and progesterone by the ovaries.
Menorrhagia Menstrual periods that are abnormally heavy in flow, or that are prolonged and last much longer than usual
Menses Another word for menstruation; the menstrual flow. Derives from the Latin word menses, which means months (singular mensis refers to 1 month).
Note that the word moon, as in the earth's moon which resolves around the earth in approximately 29.5 days, likewise derives from the Latin word mensis
Menstrual Adjective; Of or relating to menstruation
Menstrual cycle 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.
Menstrual Cycle Length This is the number of days from the first day of one menstrual period to the day before the first day of the next menstrual cycle.
Menstruation The monthly shedding of the endometrium. Menstruation is the part of a woman's menstrual cycle where the endometrium (lining of the uterus) is shed, resulting in discharge of blood. Menstruation occurs each month if the egg released at ovulation is not fertilized. It occurs from menarche during puberty until menopause.
Metrorrhagia Uterine bleeding that occurs between regular menstrual periods, which usually indicates an underlying medical condition
Mittelschmerz Pain occurring during ovulation on one side of the lower abdomen. The location (left or right side) is based on which ovary produces the ovum that month.
Oligomenorrhea Menstrual periods with abnormally light flow
Oligoovulation Very irregular ovulatory cycles
Ovary Female reproductive organ located in the pelvis. There are two ovaries, one of the right side of the uterus, the other on the left side. Produces eggs (ova) and the female hormones.
Oviduct Another word for Fallopian tube.
Ovulation Release of a mature egg from one of the two ovaries. Occurs approximately midway between the menstrual cycle. The egg is released into the Fallopian tube, where it is available for fertilization.
Ovulation is the second phase of the menstrual cycle, with Follicular being phase one, and Luteal being phase three
Ovum Female reproductive cell, the ovum (also known as the egg) is produced by the ovaries. Ova is plural for ovum
Perimenopause Transitional period of several years before menopause. Hormone level fluctuations (gradual decrease in estrogen) can result in irregular menstrual cycles, hot flashes, night sweats, and other symptoms.
Period An occurrence of menstruation
Premenstrual Syndrome (PMS) A combination of physical and mood related symptoms that occur after ovulation and usually terminate at the start of the menstrual period or shortly thereafter. Many symptoms have been attributed to PMS, including mood changes, bloating, acne, fatigue, anxiety and irritability, breast swelling and tenderness.
Polymenorrhea Menstrual periods that are abnormally frequent
Progesterone Female hormone produced by the corpus luteum; responsible for preparing and maintaining the uterus for pregnancy.
Spotting Light bleeding that occurs at a time during the month other than the menstrual period.
Uterus The uterus is a hollow, pear-shaped muscular organ. It is normally where the fertilized ovum (egg) is implanted, and where the fetus develops
Womb Another word for uterus