fallopian tube

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fallopian tube

(fəlō`pēən), either of a pair of tubes extending from the uterus to the paired ovaries in the human female, also called oviducts, technically known as the uterine tube. At one end the long, slender fallopian tube opens into the uterus; the other end expands into a funnel shape near the ovary. The epithelium that lines the tube is covered with cilia that beat continuously toward the uterus. When an ovum is expelled into the peritoneal cavity from the ovary during ovulation, it is propelled into the wide-mouthed opening of the fallopian tube, through the tube, and into the uterus by the wavelike motion of the cilia. If the ovum is fertilized, an event that normally takes place in the fallopian tube, and the embryo (fertilized ovum) implants in the tube, or another area outside the uterus, an ectopic pregnancy occurs. About 98% of ectopic implantations occur in the tubes, but other sites include the abdomen, ovary, and cervix. Immediate surgical removal of the products of conception is necessary to prevent hemorrhage and other complications resulting from ectopic pregnancy. The fallopian tubes are also the site of the most common surgical procedures used to prevent conception or cause infertility in women. Usually the tubes are tied off in a procedure known as tubal ligation, although they are also sometimes excised or occluded by other methods. See reproductive systemreproductive system,
in animals, the anatomical organs concerned with production of offspring. In humans and other mammals the female reproductive system produces the female reproductive cells (the eggs, or ova) and contains an organ in which development of the fetus takes
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; uterusuterus,
in most female mammals, hollow muscular organ in which the fetus develops and from which it is delivered at the end of pregnancy. The human uterus is pear-shaped and about 3 in. (7.
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.
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Fallopian tube

The upper part of the female oviduct present in humans and other higher vertebrates. The Fallopian tube extends from the ovary to the uterus and transports ova from the ovary to the cavity of the uterus. Each tube is about 5 in. (12.5 cm) long; one lies on either side of the uterus and is attached at the upper portion. Each curves outward to end in a hoodlike opening, the infundibulum, with many fingerlike projections; the cavity of the Fallopian tube is continuous with the cavity of the coelom. The ovaries lie below and inside the tubal curve.

The ovum remains viable in the oviduct for about 1–3 days only. If fertilization occurs, the ovum moves into the cavity of the uterus and then implants on its wall. If fertilization fails to occur, the ovum degenerates in the uterus. Occasionally, a fertilized ovum fails to enter the uterus, or may be freed into the abdominal cavity, so that an ectopic pregnancy results if the ovum finds a site for implantation. See Reproductive system

McGraw-Hill Concise Encyclopedia of Bioscience. © 2002 by The McGraw-Hill Companies, Inc.

Fallopian tube

[fə′lō·pē·ən ′tüb]
(anatomy)
Either of the paired oviducts that extend from the ovary to the uterus for conduction of the ovum in mammals.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The studies conducted in the early stages of clinical trials for fallopian tube cancer suggest that these drugs show a significant reduction in the tumor while providing long-term relief.
Here I describe three specific techniques that can facilitate the removal of the fallopian tubes in more-challenging cases.
He added that in case there was rupture, the fallopian tube was damaged.
Conclusion: The findings obtained from our study after administration of MSG and diltiazem showed stromal vacuolations in the fallopian tube of rat leading to change in its functional aspect and impairing the female fertility while treatment with diltiazem prevents these effects.
Ricca, "Paratubal cyst torsion with compromise of the fallopian tube in an adolescent girl," The American Surgeon, vol.
The results revolve around the fallopian tubes, which enable egg cells that have the potential to be fertilised and become embryos to pass from the ovaries where they are made to the uterus.
Phylogenetic clustering based on whole exome sequencing data from germline DNA, STIC, and HGSC from 3 sites (fallopian tube, ovary, and omentum) demonstrated STIC to be the HGSC precursor lesion in half of the cases.
New research suggests that ovarian cancer actually originates in the fallopian tubes, not the ovaries, as was previously thought.
Diagnostic hysterosalpingogram (HSG) with the oil soluble contrast media (OSCM) Lipiodol was the standard test for fallopian tube patency until about 40 years ago (Johnson, 2013).
Results: The success rate of fallopian tube recanalization was 93.1% (54/58), the pregnancy rate was 79.3% (46/58) and the recurrence rate was 5.2% (3/58) in the experimental group.
In the present case, Laparoscopic evaluation of the hernial sac (left inguinal canal) revealed the uterus, ipsilateral ovary, fallopian tube, and the opposite adnexal mass.
In recent past, many histopathological studies have provided new evidence that fallopian tube mucosa may be the source of most high-grade serous ovarian carcinomas.