uterine horn(redirected from Uterine horns)
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u·ter·ine horn, horn of uterus [TA]
the portion of the uterus to which the intramural section of the uterine tube enters on either the right or left.
Synonym(s): cornu uteri [TA]
Either of the two upper corners of the uterus into which the uterine tubes enter.
See also: horn
most common in cattle and in dorsal wall due to injury during insemination or intrauterine therapy for infertility or instrumental obstetric manipulation.
uterine accommodation limited
may contribute to flexural deformities of limbs especially in foals; obesity of the dam may contribute to the limitation.
uterine artery rupture
occurs during parturition, and often accompanies uterine prolapse in cows. There is marked mucosal pallor and death occurs quickly due to hemorrhagic anemia. In mares, rupture of the middle uterine artery causes hemorrhage, colic, and often, death.
see uterine caruncle.
see cervix uteri.
copious, foul-smelling discharge in postpartum septic metritis in cows; thick, white, small volume discharge in endometritis.
includes torsion, downward deviation in sows, inguinal and ventral hernia, prolapse.
palpable per rectum in cows, mares, through the abdominal wall in cats and dogs; pregnancy the common cause, pyometra, accumulation of secretions in imperforate hymen rarely. Pregnancy distinguishable in cows and mares by presence of membranes, or cotyledons in cows or fetus or fremitus in middle uterine artery.
uterine downward displacement
occurs in deep-bodied, pregnant sows with large litters and dystocia results.
uterine expulsive deficiency
see uterine inertia (below).
simple or branched, tubular glands extending into the lamina propria-submucosa; secrete mucus, lipids, glycogen, protein.
one of the pair of tubular extensions from the uterine body. Amongst the domestic species the horns are largest in those that bear many young (polytocous), e.g. sows, bitches, and shorter in those that bear single young (unitocous). Birds have two but only the left one is well developed or functional.
primary, due to overstretching of the uterus or toxemia or obesity, or secondary, due to exhaustion, lack of myometrial contractions.
return to normal size after the delivery of the fetus.
uterine involution failure
common sequel to normal parturition in aged, high-producing cows, especially those suffering from milk fever or ketosis; metritis is a common sequel.
includes uterus didelphys, uterus unicornis and segmental aplasia of any part of the tubular organ.
secretions of the uterine endometrium in the early part of pregnancy; sustains the fetus until placental attachments are fully functional.
uncommon but fibroleiomyoma occurs in bitches, leiomyoma and lymphosarcoma in cows.
see uterine prolapse.
occurs usually during parturition and due to human intervention. Repairable if recognized but may lead to peritonitis.
dry, inspissated granules, yellow in color, found occasionally on the exterior of the bovine placenta. Probably derived from blood leaked into the lumen of the uterus in early pregnancy.
uterine stump granuloma
chronic inflammation due to infection or nonabsorbable sutures used in closing the stump after ovariohysterectomy.
swab of the uterus for bacteriological and virological examination for pathogens likely to adversely affect fertility. Used in fertility maintenance of mares.
torsion of the body of the uterus in cows and mares and of a horn of the uterus in the sow. Causes dystocia characterized by the nonappearance of any part of the fetus in the vulva. Occurs rarely in dogs and cats.
a slender tube extending from the uterus to the ovary on the same side, conveying ova to the cavity of the uterus and permitting passage of spermatozoa in the opposite direction. It is mostly suspended in a fold of peritoneum (mesosalpinx) that may enclose a cavity (ovarian bursa). It terminates at the ovarian end in a dilated funnel (infundibulum). Called also fallopian tube and oviduct.
When the mature ovum leaves the ovary it enters the fringed opening of the uterine tube, through which it travels slowly to the uterus. When conception takes place, the tube is usually the site of fertilization.
uterine tube occlusion
may be congenital, or constricted by scar tissue in chronic peritonitis; a rare cause of infertility.