uterine decidua

Examples of uterine decidua in the following topics:

• Fourth Week of Development

  • Trophoblast cells surrounding the embryonic cells proliferate and invade deeper into the uterine lining.
  • The chorionic villi, which invade and destroy the uterine decidua and at the same time absorb from it nutritive materials for the growth of the embryo.

• Development of the Extraembryonic Coelom

  • Villi emerge from the chorion, which invade the endometrium, destroy the uterine decidua, and allow the transfer of nutrients from maternal blood to fetal blood.

• Chorionic Villi and Placental Development

  • These villi invade and destroy the uterine decidua while at the same time they absorb nutritive materials from it to support the growth of the embryo .
  • The placenta is a fetally derived organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood supply.
  • The placenta functions as a fetomaternal organ with two components: the fetal placenta (chorion frondosum), which develops from the same blastocyst that forms the fetus; and the maternal placenta (decidua basalis), which develops from the maternal uterine tissue.

• Trophoblast Development

  • Some of the trophoblast even replaces the endothelial cells in the uterine spiral arteries as they remodel these vessels into wide bore conduits that are independent of maternal vasoconstriction.
  • The primary factor in IUGR is placental dysfunction caused by a failure of the extravillous trophoblasts to penetrate and modify the uterine spiral arteries.
  • A blastocyst embedded in the uterine decidua.
  • Uterine epithelium, u.g.
  • Uterine glands., y.s.

• Anatomical Changes

  • After implantation, the uterine endometrium is called the decidua.
  • The placenta, which is partly formed from the decidua and partly from outer layers of the embryo, connects the developing embryo to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood supply.

• Uterine (Menstrual) Cycle

  • The uterine cycle describes a series of changes that occur to the lining of the uterus, or endometrium, during a typical menstrual cycle.
  • Several changes to the uterine lining (endometrium) occur during the menstrual cycle, also called the uterine cycle.
  • If a blastocyst implants, then the lining remains as the decidua.
  • Follicular development may start but not be completed although estrogen will still stimulate the uterine lining.

• Premature Infants

  • Four different pathways have been identified that can result in preterm birth: precocious fetal endocrine activation, uterine overdistension, decidual bleeding, and intrauterine inflammation/infection.
  • The presence of this glycoprotein in the cervical or vaginal secretions indicates that the border between the chorion and deciduas has been disrupted.

• Uterine Prolapse

  • Uterine prolapse occurs when the ligaments supporting the uterus become so weak that the uterus slips down from its normal position.
  • Uterine prolapse is a form of female genital prolapse.
  • The causes uterine prolapse are not unlike those that also contribute to urinary incontinence.
  • The most common cause of uterine prolapse is trauma during childbirth, in particular multiple or difficult births.

• Female Duct System

  • The Fallopian tubes, also known as oviducts, uterine tubes, and salpinges (singular salpinx), are two very fine tubes lined with ciliated epithelia, leading from the ovaries of female mammals into the uterus via the uterotubal junction.
  • The tubal ostium is the point at which the tubal canal meets the peritoneal cavity, while the uterine opening of the Fallopian tube is the entrance into the uterine cavity, the uterotubal junction.
  • After about five days, the new embryo enters the uterine cavity and implants about a day later.
  • Illustrative drawing of the anterior view of the uterus showing the uterine segments

• Hysterectomy

  • Hysterectomy may be total (removing the body, fundus, and cervix of the uterus, often called complete) or partial (removal of the uterine body while leaving the cervix intact, also called supracervical) .
  • Because of this, hysterectomy is normally recommended as a last resort to remedy certain intractable uterine/reproductive system conditions.
  • Certain types of reproductive system cancers (uterine, cervical, ovarian, endometrium) or tumors, including uterine fibroids that do not respond to more conservative treatment options.
  • Severe and intractable endometriosis (growth of the uterine lining outside the uterine cavity) and/or adenomyosis (a form of endometriosis, where the uterine lining has grown into and sometimes through the uterine wall musculature), after pharmaceutical or other surgical options have been exhausted.