Urination

urinateurinatingmicturitionurine sprayingvoidingspraying urinepublic urinationurinatedurinatespiss
Urination is the release of urine from the urinary bladder through the urethra to the outside of the body.wikipedia
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Urine

urinaryhuman urinepiss
Urination is the release of urine from the urinary bladder through the urethra to the outside of the body.
Urination results in urine being excreted from the body through the urethra.

Urinary system

urinary tracturinaryrenal system
It is the urinary system's form of excretion.
Following filtration of blood and further processing, wastes (in the form of urine) exit the kidney via the ureters, tubes made of smooth muscle fibres that propel urine towards the urinary bladder, where it is stored and subsequently expelled from the body by urination (voiding).

Human penis

penispenisesdick
In placental mammals, urine is drained through the urinary meatus, a urethral opening in the male penis or female vulval vestibule.
The human penis is an external male intromittent organ that additionally serves as the urinal duct.

Autonomic nervous system

autonomicautonomous nervous systemautonomic functions
Physiologically, urination involves coordination between the central, autonomic, and somatic nervous systems.
The autonomic nervous system is a control system that acts largely unconsciously and regulates bodily functions such as the heart rate, digestion, respiratory rate, pupillary response, urination, and sexual arousal.

External sphincter muscle of female urethra

female external urethral sphincterexternal urethral sphincterfemale external sphincter
Part of the urethra is surrounded by the male or female external urethral sphincter, which is innervated by the somatic pudendal nerve originating in the cord, in an area termed Onuf's nucleus.
The external sphincter muscle of female urethra is a muscle which controls urination in females.

Diuresis

osmotic diuresisforced diuresisimmersion diuresis
Diuresis (production of urine by the kidney) occurs constantly, and as the bladder becomes full, afferent firing increases, yet the micturition reflex can be voluntarily inhibited until it is appropriate to begin voiding.
Diuresis is increased urination and the physiologic process that produces such an increase.

Parasympathetic nervous system

parasympatheticparasympathetic nerveparasympathetic nerves
The smooth muscle of the bladder, known as the detrusor, is innervated by sympathetic nervous system fibers from the lumbar spinal cord and parasympathetic fibers from the sacral spinal cord.
The parasympathetic system is responsible for stimulation of "rest-and-digest" or "feed and breed" activities that occur when the body is at rest, especially after eating, including sexual arousal, salivation, lacrimation (tears), urination, digestion and defecation.

Urinary incontinence

incontinenceurinarycontinence
Urinary incontinence (UI), also known as involuntary urination, is any uncontrolled leakage of urine.

Pontine micturition center

Barrington's nucleuscentral nervous system
Brain centres that regulate urination include the pontine micturition center, periaqueductal gray, and the cerebral cortex. Micturition is fundamentally a spinobulbospinal reflex facilitated and inhibited by higher brain centers such as the pontine micturition center and, like defecation, subject to voluntary facilitation and inhibition.
The Pontine micturition center (PMC, also known as Barrington's nucleus) is a collection of neuronal cell bodies located in the rostral pons in the brainstem involved in the supraspinal regulation of micturition.

Cystometry

Cystometrogram
A plot of bladder (intravesical) pressure against the depressant of fluid in the bladder (called a cystometrogram), will show a very slight rise as the bladder is filled.
Specifically, it measures contractile force of the bladder when voiding.

Overactive bladder

Urge incontinencebladder spasmincontinence
Overactive bladder (OAB) is a condition where there is a frequent feeling of needing to urinate to a degree that it negatively affects a person's life.

Urinary tract infection

cystitisurinary tract infectionsbladder infection
Resisting the urge to urinate because of lack of facilities can promote urinary tract infections which can lead to more serious infections and, in rare situations, can cause renal damage in women.
Symptoms from a lower urinary tract infection include pain with urination, frequent urination, and feeling the need to urinate despite having an empty bladder.

Urinary meatus

meatusurethral meatusurinary opening
In placental mammals, urine is drained through the urinary meatus, a urethral opening in the male penis or female vulval vestibule.
It presents as a vertical slit, possibly bounded on either side by two small labia-like projections and continues longitudinally along the front aspect of the glans, which facilitates the flow of urine micturition.

Dysuria

painful urinationburning with urinationpain with urination
Dysuria refers to painful urination.

Urethra

male urethraurethralFemale urethra
Urination is the release of urine from the urinary bladder through the urethra to the outside of the body.
The external urethral sphincter is a striated muscle that allows voluntary control over urination.

Paruresis

voiding dysfunctioncannot urinate in publicshy bladder syndrome
Paruresis, also known as shy bladder syndrome, is an example of a bladder interruption from the brain that often causes total interruption until the person has left a public area.
Paruresis, also known as shy bladder syndrome, is a type of phobia in which a person is unable to urinate in the real or imaginary presence of others, such as in a public restroom.

Antidiuretic

anti-diureticantidiuresisantidiuretic agents
An antidiuretic is a substance that helps to control fluid balance in an animal's body by reducing urination, opposing diuresis.

Detrusor muscle

detrusordetrusor urinae muscledetrusor muscles
The smooth muscle of the bladder, known as the detrusor, is innervated by sympathetic nervous system fibers from the lumbar spinal cord and parasympathetic fibers from the sacral spinal cord.
The detrusor muscle remains relaxed to allow the bladder to store urine, and contracts during urination to release urine.

Micturition syncope

Micturition syncope or post-micturition syncope is the name given to the human phenomenon of fainting shortly after or during urination.

Female urination device

funnelpersonal funnelsstand-to-pee
An alternative method for women to urinate standing is to use a tool known as a female urination device to assist.
A female urination device, female urination aid, or stand-to-pee device (STP) is a device which aids a woman or girl to urinate while standing upright.

Overflow incontinence

It becomes overfilled, and urine dribbles through the sphincters (overflow incontinence).
Overflow incontinence is a form of urinary incontinence, characterized by the involuntary release of urine from an overfull urinary bladder, often in the absence of any urge to urinate.

Defecation

defecatedefecatingbowel movement
Micturition is fundamentally a spinobulbospinal reflex facilitated and inhibited by higher brain centers such as the pontine micturition center and, like defecation, subject to voluntary facilitation and inhibition.
This explains why defecation is frequently accompanied by urination.

Urinal (health care)

urinalurinal in bottle form
Sometimes urination is done in a container such as a bottle, urinal, bedpan, or chamber pot (also known as a gazunder).
A urinal is a bottle for urination.

Toilet

toiletslavatorylavatories
It is socially more accepted and more environmentally hygienic for those who are able, to urinate in a toilet.
In other words: "Toilets are sanitation facilities at the user interface that allow the safe and convenient urination and defecation".

Diaper

diapersnappynappies
Babies have little socialized control over urination within traditions or families that do not practice elimination communication and instead use diapers.
A diaper (American and Canadian English) or a nappy (Australian, British English And Hiberno-English) is a type of underwear that allows the wearer to defecate or urinate without the use of a toilet, by absorbing or containing waste products to prevent soiling of outer clothing or the external environment.