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Urinary Bladder

Urinary Bladder

The urinary bladder is a hollow, muscular sac that temporarily stores urine before it is expelled from the body. It can hold approximately 600 mL of urine prior to micturition. The bladder is retroperitoneal and located behind the pubic symphysis in the pelvic floor.
In males, the bladder is situated in front of the rectum, while in females, it is positioned anterior to the vagina and uterus. The bladder floor contains an inverted triangular area called the trigone, defined by the two ureteric...

Anatomy of the Genitourinary System II: Bladder and Urethra

Anatomy of the Genitourinary System II: Bladder and Urethra

The lower urinary system consists of the urinary bladder and urethra, which are essential in storing and expelling urine from the body. Together with the internal and external sphincters, these structures work together to regulate urination effectively.Anatomy of the BladderThe urinary bladder is a muscular, stretchable organ behind the pubic bone and in front of the rectum. In females, the bladder is positioned anterior to the vagina and inferior to the uterus, while in males, it is located...

The Micturition Reflex

The Micturition Reflex

Urination, or micturition involves the coordination of the bladder's detrusor muscle and two sphincters to ensure controlled bladder emptying.
The process begins with bladder filling, where the bladder wall stretches as urine accumulates. This stretching activates the urine storage reflex, mediated by the sacral spinal segments and the pontine storage center. Efferent sympathetic impulses stimulate the detrusor muscle to relax and the internal urethral sphincter to contract, facilitating urine...

Disorders of the Urinary System

Disorders of the Urinary System

The urinary system is responsible for eliminating waste and excess fluids from the body. However, disorders of the urinary system can arise due to various reasons like infections, stress, age, congenital abnormalities, and lifestyle.
Urinary tract infections (UTIs) are one of the most common urinary system disorders. They are caused by bacteria that enter the urethra and can spread to the bladder resulting in cystitis. Pyelonephritis is the result of a UTI that has ascended to the level of the...

Disorders of the Autonomic Nervous System

Disorders of the Autonomic Nervous System

The autonomic nervous system (ANS) is an intricate network of nerves that controls functions such as the regulation of heart rate, digestion, and blood pressure regulation. When this system malfunctions, it can lead to various disorders that affect multiple bodily functions. One common feature of many autonomic disorders is the involvement of smooth blood vessels, which play a crucial role in regulating blood flow throughout the body.
Raynaud's disease, also known as Raynaud's phenomenon, is a...

Physiology of Urine Formation

Physiology of Urine Formation

Urine formation is an essential function of the human body. It plays a critical role in maintaining homeostasis by regulating the volume and composition of body fluids. The kidneys, the primary organs involved in this process, filter blood to remove waste products and excess substances, ultimately producing urine.
Glomerular Filtration
The first stage in urine formation is glomerular filtration. Each kidney contains approximately 1 million nephrons, the functional units of filtration, with a...

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Updated: Jun 18, 2026

Detrusor Underactivity Model in Rats by Conus Medullaris Transection

Detrusor Underactivity Model in Rats by Conus Medullaris Transection

Published on: August 28, 2020

[Neurogenic bladder].

Alexia Even-Schneider¹, Alexis Schnitzler, Benjamin Bernuz

¹Service de médecine physique et readaptation, hôpital Raymond-Poincard, APHP, université de Versailles-Saint-Quentin, 92380 Garches, France. even.schneider@rpc.aphp.fr

La Revue Du Praticien

|November 10, 2009

Summary

This summary is machine-generated.

Neurologic diseases frequently cause urinary symptoms, requiring comprehensive evaluation and close follow-up. A multidisciplinary approach optimizes treatment strategies for conditions like spinal cord injury and myelomeningocele.

Related Experiment Videos

Last Updated: Jun 18, 2026

Detrusor Underactivity Model in Rats by Conus Medullaris Transection

Detrusor Underactivity Model in Rats by Conus Medullaris Transection

Published on: August 28, 2020

Area of Science:

Urology
Neurology
Rehabilitation Medicine

Context:

Urinary symptoms are common in patients with various neurologic diseases.
The specific symptoms depend on the underlying pathology, disease extent, and location.
These symptoms significantly impact quality of life and can lead to medical complications.

Purpose:

To outline the evaluation and management of urinary symptoms in neurologic diseases.
To emphasize the importance of a thorough assessment including clinical, biological, urodynamic, and radiologic methods.
To highlight the need for ongoing monitoring and a multidisciplinary approach.

Summary:

Initial evaluation involves clinical, biological, urodynamic, and radiologic assessments to define symptoms, quality of life, and complication risks.
Close follow-up is crucial for monitoring treatment efficacy, disease progression, and complications, particularly in spinal cord injury and myelomeningocele.
Optimizing treatment strategies often necessitates a collaborative, multidisciplinary team.

Impact:

Improved understanding of urinary symptom management in neurologic conditions.
Enhanced patient quality of life through tailored treatment and follow-up.
Reduced risk of medical complications associated with neurogenic bladder dysfunction.