viernes, 27 de julio de 2012

FEMALE REPRODUCTIVE SYSTEM


Female Reproductive System



The human female reproductive system contains two main parts: the uterus, which hosts the developing fetus, produces vaginal and uterine secretions, and passes the male's sperm through to the fallopian tubes; and the ovaries, which produce the female's egg cells. These parts are internal; the vagina meets the external organs at the vulva, which includes the labia, clitoris and urethra. The vagina is attached to the uterus through the cervix, while the uterus is attached to the ovaries via the Fallopian tubes. At certain intervals, the ovaries release an ovum, which passes through the Fallopian tube into the uterus.
If, in this transit, it meets with sperm, the sperm penetrate and merge with the egg, fertilizing it. The fertilization usually occurs in the oviducts, but can happen in the uterus itself. The zygote then implants itself in the wall of the uterus, where it begins the processes of embryogenesis and morphogenesis. When developed enough to survive outside the womb, the cervix dilates and contractions of the uterus propel the fetus through the birth canal, which is the vagina.
The ova are larger than sperm and have formed by the time a female is born. Approximately every month, a process of oogenesis matures one ovum to be sent down the Fallopian tube attached to its ovary in anticipation of fertilization. If not fertilized, this egg is flushed out of the system through menstruation.

 Dysmenorrhea 



Dysmenorrhea is a gynecological medical condition of pain during menstruation that interferes with daily activities, as defined by ACOG and others. Still, dysmenorrhea is often defined simply as menstrual pain, or at least menstrual pain that is excessive. This article uses the dysmenorrhea definition of menstrual pain that interferes with daily activities, and uses the term menstrual pain as any pain during menstruation whether it is normal or abnormal.
Menstrual pain is often used synonymously with menstrual cramps, but the latter may also refer to menstrual uterine contractions, which are generally of higher strength, duration and frequency than in the rest of the menstrual cycle.
Dysmenorrhea can feature different kinds of pain, including sharp, throbbing, dull, nauseating, burning, or shooting pain. Dysmenorrhea may precede menstruation by several days or may accompany it, and it usually subsides as menstruation tapers off. Dysmenorrhea may coexist with excessively heavy blood loss, known as menorrhagia.
Secondary dysmenorrhea is diagnosed when symptoms are attributable to an underlying disease, disorder, or structural abnormality either within or outside the uterus. Primary dysmenorrhea is diagnosed when none of these are detected.

 Amenorrhea


Amenorrhea is defined as delay of menstruation. There are 2 types of amenrrhea:
a)Primary amenorrhea is defined as no period by age 16 and
b)Secondary amenorrhea is defined as period beginning at the appropriate age, but later stops for more than 3 cycles or 6 months. Women who have a delay of period used to think that may be pregnant. In fact, there are many causes
of amenorrhea. In this article, we will discuss how to treat amenorrhea with nutritional supplements.


Ovarian cyst 


An ovarian cyst is any collection of fluid, surrounded by a very thin wall, within an ovary. Any ovarian follicle that is larger than about two centimeters is termed an ovarian cyst. An ovarian cyst can be as small as a pea, or larger than an orange.
Most ovarian cysts are functional in nature and harmless (benign). In the US, ovarian cysts are found in nearly all premenopausal women, and in up to 14.8% of postmenopausal women.
Ovarian cysts affect women of all ages. They occur most often, however, during a woman's childbearing years.
Some ovarian cysts cause problems, such as bleeding and pain. Surgery may be required to remove cysts larger than 5 centimeters in diameter.

Endometriosis


Endometriosis is a disorder of the female reproductive system. The uterus is composed of 3 layers: the perometrium (the outer layer), the myometrium (the muscle or middle layer), and the endometrium (the inner layer).
Each month during a woman's menstrual cycle, the endometrium grows and thickens to prepare for implantation of a fertilized ovum. When the endometrium reaches its full thickness, an egg is released from the ovaries. If the egg is fertilized, it attaches to the thickened endometrium. However, if the egg is not fertilized, the endometrial layer is sloughed off as a normal part of the menstrual cycle.
Endometriosis is a condition in which endometrial cells become attached to tissues surrounding the uterus, such as the fallopian tubes, the ovaries, or the large or small intestines.


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