urination

u·ri·nate

U0149600 (yo͝or′ə-nāt′)intr.v. u·ri·nat·ed, u·ri·nat·ing, u·ri·nates To excrete urine.

[Medieval Latin ūrīnāre, ūrīnāt-, from Latin ūrīna, urine; see urine.]

u′ri·na′tion n.u′ri·na′tive adj.u′ri·na′tor n.

urination

the process of expelling fluids from the body in the urine.See also: Bodily Functions

Thesaurus

Noun

urination - the discharge of urine micturitionexcreting, excretion, voiding, elimination, evacuation - the bodily process of discharging waste mattermaking water, passing water, wetting, leak - a euphemism for urination; "he had to take a leak"lithuresis - passing small stones with the urinenocturia, nycturia - excessive urination at night; especially common in older menoliguria - production of an abnormally small amount of urinepeeing, pissing, pee, piss - informal terms for urination; "he took a pee"

Translations

miction

Urination

urination

[‚yu̇r·ə′nā·shən] (physiology) The discharge of urine from the bladder. Also known as micturition.

Urination

(also called micturition), the reflex act of excreting urine from the body.

Uropoiesis—the production of urine—is a constant process, but urination occurs only intermittently, as the urinary bladder fills. Humans urinate four to six times daily. Urine is prevented from escaping from the bladder by two ring-shaped layers of muscle fibers: an internal sphincter, which consists of smooth muscle fibers, and an external one, which consists of striated fibers. When the pressure within the bladder reaches 2–2.66 kN/m² (kilonewtons per square meter), or 15–20 mm Hg (millimeters of mercury), stimulation of the mechanoreceptors (the nerve endings of sensory neurons) in the wall of the bladder elicits the urge to urinate. In man, this critical pressure is achieved when 300–350 ml of urine accumulate in the bladder. During urination, the external sphincter relaxes reflexively as the muscles of the bladder wall contract.

Urination is regulated by the nerve centers in the spinal cord and brain; these centers are controlled, in turn, by the cerebral cortex. The filling of the urinary bladder arouses the cerebral cortex to elicit the urge to urinate. Certain neurological diseases, as well as injuries to the muscles of the urinary bladder, impair urination.

M. IA. RATNER

What does it mean when you dream about urination?

Urination in a dream has several interpretations that range from inhibited sexual desires to the outpouring of emotional feelings that have been repressed.

Urination

(dreams)Releasing bodily wastes in a dream suggests a need to release repressed emotions and/or anxiety. At times, urination may have sexual connotations. Many people dream about the need to urinate, which wakes them up, and then they realize that they need to use the bathroom. At times, the dream triggers the physical sensation and other times the physical sensation may become a part of the dream.

urination

[u″rĭ-na´shun] the discharge of urine from the bladder; urine from the kidneys is passed in spurts every few seconds along the ureters to the bladder, where it collects and later is passed to the outside via the urethra. Called also micturition and voiding.
The Urinary Process. Urination is a complex process controlled by muscles of the bladder and sphincter mechanism and by modulatory centers in the central and peripheral nervous systems. The detrusor muscle is a complex meshwork of interlaced smooth muscle bundles that contract in a way that squeezes urine from the bladder vesicle. The sphincter mechanism consists of smooth muscle in the bladder neck and proximal urethra, a striated muscle sphincter consisting of slow twitch muscle fibers in the urethral wall, and periurethral muscles that are a component of the pelvic floor muscles. The detrusor relaxes during bladder filling to accommodate increasing volumes at a low pressure, and the sphincter remains tightly closed. During urination, the detrusor contracts and the sphincter mechanism relaxes, allowing smooth outflow of urine.

As the bladder fills, modulatory centers in the brain prevent the occurrence of contractions. Meanwhile, the sphincter mechanism remains closed under autonomic and somatic nervous system control. During urination, the inhibition of contractions is removed and a reflex originates in the pontine micturition center. That causes the detrusor muscle to contract and the sphincter mechanism to relax. The location of the final output of central nervous system impulses to and from the bladder and sphincter is the sacral micturition center, located in spinal segments 2, 3, and 4, which must be intact for contraction to occur. Injury to the pontine micturition center will compromise the smooth coordination between sphincter mechanism and detrusor muscle, and injury to the brain will affect the volitional control of urine (bladder stability). See also incontinence" >urinary incontinence.

u·ri·na·tion

(yūr'i-nā'shŭn), The passing of urine. Synonym(s): miction, micturition (1) , uresis

u·ri·na·tion

(yūr'i-nā'shŭn) The passing of urine.
Synonym(s): miction, micturition (1) , uresis.

Patient discussion about urination

Q. protien in urine what are the causes and preventionsA.

Q. How you stop urinating frequently? I don't have any conditions that make me urinate often. I simply drink lots of water... Is there some trick I can employ so that I can still drink lots of water but not have to go to the bathroom so frequently?A. I only drink water and green tea, Thanks.

Q. Today doctor removed my stunt of kidney. It inflamate while urination.. till How long i will feel like this? A. You should consult your doctor, since instruments in the kidney and urinary tracts can cause infections (even after removing them), that may cause symptoms like you describe.

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Synonyms for urination

noun the discharge of urine

Synonyms

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