ureter

u·re·ter

U0147000 (yo͝o-rē′tər, yo͝or′ĭ-tər)n. The long, narrow duct that conveys urine from the kidney to the urinary bladder or cloaca.

[New Latin ūrētēr, from Greek ourētēr, from ourein, to urinate.]

u·re′ter·al, u′re·ter′ic (yo͝or′ĭ-tĕr′ĭk) adj.

ureter

(jʊˈriːtə) n (Anatomy) the tube that conveys urine from the kidney to the urinary bladder or cloaca[C16: via New Latin from Greek ourētēr, from ourein to urinate] uˈreteral, ureteric adj

u•re•ter

(yʊˈri tər)

n. a duct that conveys urine from a kidney to the bladder in mammals or to the cloaca in other vertebrates. [1570–80; < New Latin < Greek urinate] u•re′ter•al, u•re•ter•ic (ˌyʊər ɪˈtɛr ɪk) adj.

u·re·ter

(yo͝o-rē′tər, yo͝or′ĭ-tər) Either of two long, narrow ducts that carry urine from the kidney to the urinary bladder.

Thesaurus

Noun

ureter - either of a pair of thick-walled tubes that carry urine from the kidney to the urinary bladderduct, epithelial duct, canal, channel - a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance; "the tear duct was obstructed"; "the alimentary canal"; "poison is released through a channel in the snake's fangs"apparatus urogenitalis, genitourinary apparatus, genitourinary system, systema urogenitale, urinary apparatus, urinary system, urogenital apparatus, urogenital system - the system that includes all organs involved in reproduction and in the formation and voidance of urineurinary tract - the organs and tubes involved in the production and excretion of urine

Translations

uretere

ureter

(yo͝orē`tər), thick-walled tube that conveys urine from the kidneykidney, artificial,
mechanical device capable of assuming the functions ordinarily performed by the kidneys. In treating cases of kidney failure a tube is inserted into an artery in the patient's arm and blood is channeled through semipermeable tubes immersed in a bath
..... Click the link for more information. to the urinary bladder. It is approximately 10 in. (25.4 cm) long, with the upper half located in the abdomen and the lower half in the pelvic region. Urine is transported down this tube under the impetus of gravity assisted by contractions of the smooth muscles that line the ureteral walls. A blocked ureter can result from congenital abnormality, a tumor, or the formation of kidney stones. Blockage may require surgery to prevent loss of urinary function and eventual urea poisoning. See urinary systemurinary system,
group of organs of the body concerned with excretion of urine, that is, water and the waste products of metabolism. In humans, the kidneys are two small organs situated near the vertebral column at the small of the back, the left lying somewhat higher than the
..... Click the link for more information. .

Ureter

the efferent duct that serves to remove the urine from the kidney.

During the embryonic development of many vertebrates, the excretory function is fulfilled by three successive forms of kidney: the pronephros (also called the primordial kidney or the forekidney), the mesonephros (also called the middle kidney), and the metanephros—the definitive, permanent kidney. Correspondingly, three types of ureter arise: the pronephric duct, the mesonephric duct (also called Wolffian duct), and the metanephric duct—the definitive, permanent ureter.

The pronephric ducts continue to function past the embryonic stage only in cyclostomes, in which the ducts open into the urogenital sinus. In fish and amphibians, the Wolffian ducts continue to function as ureters throughout postembryonic life. In certain fish—dipnoans, chondrosteans, and holosteans—and in male amphibians, the ureters also function as the deferent ducts. The mesonephric ducts of fish open to the exterior of the body either directly through the urinary orifice (in all female teleosts and in the males of a few teleost species), through the urogenital sinus (in elasmobranchs, holocephalans, chondrosteans, holosteans, Polypterus, and most male teleosts), or through the cloaca (in chondrichthians and dipnoans). In most teleosts, the ureters empty into the urinary bladder. The metanephric ducts are the postembryonic ureters of reptiles, birds, mammals, and man; in all these, the sole function of the ureter is to conduct urine. In birds, monotremes, and most reptiles, the ureters empty into the cloaca, while in metatherians, viviparous mammals, certain reptiles, and man, they empty into the urinary bladder.

In man the two ureters are tubular organs through which urine flows from the kidneys into the urinary bladder. The ureters are situated on the posterior wall of the abdominal cavity on both sides of the spinal column. On the average, each ureter is 30–35 cm long and 7–9 mm at its widest diameter. The ureters are internally lined with mucosa. Smooth muscles in the walls of the ureters ensure the flow of urine to the urinary bladder, regardless of the position the body is in.

Urethritis—inflammation of the ureteral mucosa—is the commonest disease of the ureters. Kidney stones can pass through the ureters, causing injury to the ureteral linings. Occasionally, one or both ureters can be congenitally bifurcated at the site of emergence from the kidney; complete doubling of one or both ureters is also possible. Other developmental anomalies include prolapse of the ureter into the vagina (in women) or into the seminal vesicles (in men).

ureter

[′yu̇r·əd·ər] (anatomy) A long tube conveying urine from the renal pelvis to the urinary bladder or cloaca in vertebrates.

ureter

the tube that conveys urine from the kidney to the urinary bladder or cloaca

Ureter

ureter

[u-re´ter] the fibromuscular tube, 41 to 46 cm long, through which the urine passes from the kidney to the bladder. adj., adj ure´teral, ureter´ic. As urine is produced by each kidney, it passes into the ureter, which, by contracting rhythmically, forces the urine along and empties it in spurts into the bladder. After being stored temporarily in the bladder, the urine passes out of the body by way of the urethra. Occasionally a small calculus or stone forms in a kidney and passes into a ureter, obstructing it. (See kidney stone.)

u·re·ter

(yū-rē'tĕr, yū'rē-ter), [TA] Although the classically correct pronunciation stresses the second-last syllable of this word (ure'ter), the first syllable is often stressed in the U.S. (ur'eter). Do not confuse this word and its derivatives with urethra and its derivatives.The tube that conducts the urine from the renal pelvis to the bladder; consists of abdominal and pelvic parts; lined with transitional epithelium surrounded by smooth muscle, both circular and longitudinal, and covered externally by an adventitia. [G. ourētēr, urinary canal]

ureter

(yo͝o-rē′tər, yo͝or′ĭ-tər)n. The long, narrow duct that conveys urine from the kidney to the urinary bladder or cloaca.

u·re′ter·al, u′re·ter′ic (yo͝or′ĭ-tĕr′ĭk) adj.

ureter

A tube that carries urine downwards from each kidney to the urinary bladder for temporary storage. The ureters have muscular walls that can contract to assist in the propulsion of the urine.

ureter

the duct that carries URINE from the kidney to the CLOACA or urinary BLADDER.

Ureter

The tube that carries urine from the kidney to the bladder, with each kidney having one ureter.Mentioned in: Congenital Bladder Anomalies, Cystoscopy, Lithotripsy, Neurogenic Bladder, Retrograde Cystography, Salpingo-Oophorectomy, Ureteral Stenting, Vesicoureteral Reflux

ureter

noun

Words related to ureter

noun either of a pair of thick-walled tubes that carry urine from the kidney to the urinary bladder

Related Words

duct
epithelial duct
canal
channel
apparatus urogenitalis
genitourinary apparatus
genitourinary system
systema urogenitale
urinary apparatus
urinary system
urogenital apparatus
urogenital system
urinary tract