oviduct

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oviduct:

see fallopian tubefallopian tube
, 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.
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Oviduct

 

a female reproductive duct (usually paired) that serves mainly for the passage of mature eggs, or ova, that have formed in the ovary. The oviduct may be the direct continuation of the ovary (roundworms, arthropods, and echinoderms), or it may be completely isolated from the ovary. In the latter case, the oviduct opens anteriorly into the coelom and posteriorly into the cloaca (most vertebrates) or to the surface (annelid worms and mammals). Sexual funnels of annelid worms serve as the oviducts; most vertebrates have müllerian ducts, which develop from the primary renal duct. The oviducts of sturgeons and Holostei lie next to the ovaries. In most bony fishes the oviducts and ovaries are fused.

The egg is usually propelled through the oviduct by the contraction of the muscular walls or by movement of the cilia of the epithelium lining the cavity of the duct. The oviduct usually has various membranes. Its walls secrete coating substances; sometimes the substances are elaborated only by special regions of the ducts. For example, cephalopod mollusks have a special oviduct gland, and cartilaginous fishes have a shell gland.

The portion of the oviduct in which the eggs or embryos mature is called the uterus. Mammalian eggs are fertilized in the fallopian, or uterine, tubes, which are situated above the uterus. The terminal portion of the oviduct in organisms marked by internal fertilization (with the oviduct opening to the exterior) is called the vagina.

oviduct

[′ō·və‚dəkt]
(anatomy)
A tube that serves to conduct ova from the ovary to the exterior or to an intermediate organ such as the uterus. Also known in mammals as Fallopian tube; uterine tube.

oviduct

the tube through which ova are conveyed from an ovary
References in periodicals archive ?
Oviductal sperm storage structure and their changes during the seasonal (dissociated) reproductive cycle in the soft-shelled turtle Lissemys punctata.
Unfortunately, gonadal mass was calculated considering ovaries and oviductal eggs, which was a mistake.
In vitro capacitation of bull spermatozoa by oviductal fluid and its components.
Seasonal changes in the ovarian cycle of Cambelia coped; * = oviductal eggs and concurrent yolk deposition for second clutch; ** one clutch was not counted.
Month n Quiescent Yolk Enlarged Oviductal Embryos deposition follicles eggs >5mm January 6 3 0 2 0 1* April 1 1 0 0 0 0 May 5 2 0 2 1 0 June 2 1 0 0 0 1 July 4 3 0 0 0 1 August 8 3 2 3 0 0 October 1 1 0 0 0 0 * Reproductive organs were damaged making it impossible to count the number of embryos.
The frequency of oviductal pathologies found in this study is higher than what was found in others showing prevalence ranging from 10 to 15% in slaughtered animals (MEGALE, 1985).
In this improved method sharp tip of modified embryo transfer pipette can be inserted easily through the wall of the oviduct, so there is no need to puncture the oviductal wall by needle before insertion of pipette.
In this sense, the inner surface of the oviduct, as well as the oviductal fluid have drastic effects on the aforesaid biological processes.
oviductal eggs and enlarged ovarian follicles (>4mm) were counted.
Modulation of oviductal transport in mares by local application of prostaglandin E2.
Identification and characterization of de novo-synthesized porcine oviductal secretory proteins.