oviduct

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Related to Oviducts: culdoscope, Uterine horns

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 ?
After incubation, the oviduct wall was mechanically squeezed with sterile forceps and its contents were flushed into a Petri dish.
Expression of Hoxa9, Hoxal0 and Hoxa 11 was decreased in oviducts of Gen-treated mice compared with controls, whereas Hoxal3 was highly up-regulated.
Table 4 shows the development state of oviducts and the ovaries of the examined gilts.
Female reproductive tract of Triatoma lecticularia showing ovaries (OV), lateral oviducts (LO), common oviduct (CO) and two spermathecae (Sp).
Follicles were observed to develop gradually into the vitellarium, where the least mature follicles were located distally whereas the mature ones occurred proximally, close to the common oviduct (Fig.
The histological sections of oviducts of group B showed three layers: serosa (external layer), myosalpinx (intermediate layer) and endosalpinx (inner layer).
Mature ova released from the oviduct are wrapped with a gelling agent from the oviducal gland using water to form a mucous matrix.
Visualization of the ovaries was possible by cervical access and through the prefemoral window, where they were located adjacent to the oviduct. The ovarian follicles were observed as spherical structures, hyperechoic relative to the oviduct, homogeneous, with clear limits, in quantity and of different sizes.
Both oviducts in each animal were kept separately in normal saline at 37[degrees]C in a petri dish.
The dorsal-mesodermal region of the SR is connected to the ovary by the oviduct, while the ventral-ectodermal region of the SR is cuticle-lined and connected to the vagina (McLay and Lopez Greco, 2011).
In our study, we assessed the effect produced by cladribine on the cells of the epithelium of the oviducts. We also ascertained the standard pathway of the activation of the apoptosis through the participation of caspases.