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Topic: Oviduct

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In the News (Thu 22 Aug 19)

  How a Hen Lays an Egg - Incubation and Embryology - University of Illinois Extension
Inside the hen there is an ovary and an oviduct.
The follicles ovulate or burst from the ovary.
In the oviduct, the albumen or egg white is made.
www.urbanext.uiuc.edu /eggs/res17-layeggs.html   (213 words)

Hyperactivation is thought to be critical to fertilization as it allows sperm to detach from the oviductal epithelium, move in the lumen of the oviduct, and penetrate through the extracellular matrices surrounding the oocyte [84].
Oviductal motility is altered in humans [117] and in rabbits [118] by inhalation of mainstream smoke.
While many of the toxicants that affect the oviduct have not been quantified in smokers and there is little known about their concentrations in the oviduct, those chemicals that have been studied, appear to reach the reproductive organs and are often found in higher concentration in reproductive tissues and fluids than in serum or urine.
www.obgyn.net /young-woman/?page=/pb/articles/smoking_reproduction   (7067 words)

 Blue Histology - Female Reproductive System
The oviduct functions as a conduit for the oocyte, from the ovaries to the uterus.
Obstruction of the oviduct as a consequence of salpingitis is one possible cause of infertility, and alterations of luminal structure by inflammatory processes are a risk factor for tubal pregnancies.
In the intramural part of the oviduct (uterus slide) the mucosa is smooth and ciliated cells are rare or absent.
www.lab.anhb.uwa.edu.au /mb140/CorePages/FemaleRepro/femalerepro.htm   (2694 words)

 BioMed Central | Full text | Neuromuscular organization and aminergic modulation of contractions in the Drosophilaovary
The common oviduct and uterus are innervated by two classes of neurons, one with similar morphology to those of the peritoneal sheath and another with repeated branches and axon endings similar to type I neuromuscular junctions.
Oviduct contractions are often associated with those of the peritoneal sheath; they last 1–2 seconds and have a rapid rise and fall.
This is different from the response of the locust oviduct, where tyramine had a very similar inhibitory effect to octopamine on the contraction frequency and basal tone [33].
www.biomedcentral.com /1741-7007/4/17   (6774 words)

# 179 - Oviduct (fallopian tube), fimbriae, human, h.
This section (slide 179) was taken through the ampulla.
Identify the mucosal folds and the secretory peg cells which are located between the ciliated columnar epithelial cells lining the oviduct.
www3.umdnj.edu /histsweb/lab17/lab17oviduct.html   (267 words)

The failure of an egg to pass through the oviduct at a normal rate.
Eggs not taken up by the oviduct and instead are deposited into the abdomen.
Can also be caused by rupture of the oviduct and is more likely to occur if hens are restrained or stressed during ovulation.
www.parrotsociety.org.au /articles/art_014.htm   (2004 words)

 Nikon MicroscopyU: Fluorescence Microscopy Digital Image Gallery - Rat Oviduct Tissue Sections
The oviducts are tubular tracts that ova travel through to the uterus or to the outside of the body from the ovaries in egg-producing female animals.
The internal environment provided by the oviducts is conducive to fertilization of ova and the first stages of conceptus development.
An egg enters an oviduct at the broad portion of the tube known as the infundibulum and moves along the tube with the help of the ciliated epithelium that lines it.
www.microscopyu.com /galleries/fluorescence/ratoviduct/index.html   (370 words)

 uterine tube (fallopian tube, oviduct)
Retention of ova in oviducts of senescent mice and hamsters.
Age-dependent participation of the adenohypophysis and adrenal cortex in the estrogenic response of the quail oviduct.
The mechanism of androgen and estrogen synergism in the chick oviduct.
www.arclab.org /node_pages/2631.html   (618 words)

 Definition of oviduct - Merriam-Webster Online Dictionary
Learn more about "oviduct" and related topics at Britannica.com
Find more about "oviduct" instantly with Live Search
See a map of "oviduct" in the Visual Thesaurus
www.m-w.com /cgi-bin/dictionary?book=Dictionary&va=oviduct   (46 words)

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