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Introduction to Urinary System

Introduction to Urinary System

The urinary system consists of two kidneys, two ureters, the urinary bladder, and the urethra.
The kidneys are bean-shaped organs located in the retroperitoneal space, on either side of the vertebral column, between the T12 and L3 vertebrae. They are partially protected by the rib cage and surrounded by perirenal fat, which provides cushioning. They are responsible for urine formation and play critical roles in regulating blood pressure, electrolyte levels, and hormone production. The ureters...

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...

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...

Urinary Tract Calculi I: Introduction

Urinary Tract Calculi I: Introduction

Renal calculi, or kidney stones, are solid deposits of minerals and salts formed inside the kidneys. In medical terminology, "calculus" refers to the stone itself, while "lithiasis" describes the process of stone formation. Depending on their location within the urinary system, these stones may be classified as either urolithiasis, when situated within the urinary tract, or nephrolithiasis, when located within the kidneys. Each term signifies the specific impact of the stone.Predisposition...

Urinary Tract Infection I: Introduction

Urinary Tract Infection I: Introduction

Urinary tract infections (UTIs) impact various parts of the urinary system, including the kidneys, ureters, bladder, and urethra. These infections are generally bacterial, with Escherichia coli being the most common causative agent, often originating from the gastrointestinal tract. However, other bacteria, such as Staphylococcus saprophyticus, Klebsiella pneumoniae, and Proteus mirabilis, are also known to cause UTIs. The type, location, and underlying complexity of the UTI guide both...

Urinary Tract Infection II: Pathophysiology

Urinary Tract Infection II: Pathophysiology

The pathophysiology of urinary tract infections (UTIs) encompasses several progressive stages, beginning with bacterial colonization and culminating in potential systemic complications if untreated. UTIs are primarily initiated by bacteria, such as Escherichia coli, which often originate from the gastrointestinal tract and migrate to the urinary system through the periurethral area. This migration can occur via several routes, including improper hygiene practices, sexual activity, or...

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Related Experiment Video

Updated: Jan 25, 2026

Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing

Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing

Published on: August 14, 2019

Urinary Incontinence.

Gretchen M Irwin¹

¹Family Medicine Residency, Department of Family and Community Medicine, Wesley Medical Center, University of Kansas School of Medicine--Wichita, 1010 North Kansas, Wichita, KS 67214, USA.

|April 30, 2019

Summary

This summary is machine-generated.

Urinary incontinence affects millions and is often undertreated. Primary care physicians can effectively manage this condition by diagnosing the type of incontinence and using patient quality-of-life data to guide treatment.

Keywords:

Pelvic floor muscle training Stress incontinence Urge incontinence Urinary incontinence

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Last Updated: Jan 25, 2026

Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing

Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing

Published on: August 14, 2019

Transurethral Induction of Mouse Urinary Tract Infection

Transurethral Induction of Mouse Urinary Tract Infection

Published on: August 5, 2010

A Modified Precipitation Method to Isolate Urinary Exosomes

A Modified Precipitation Method to Isolate Urinary Exosomes

Published on: January 16, 2015

Area of Science:

Urology
Primary Care Medicine

Background:

Urinary incontinence is a prevalent condition affecting millions of Americans.
It is frequently underdiagnosed and undertreated in primary care settings.

Purpose of the Study:

To emphasize the role of primary care physicians in diagnosing and managing urinary incontinence.
To highlight the importance of accurate diagnosis and patient-reported outcomes in treatment.

Main Methods:

Review of current diagnostic and treatment strategies for urinary incontinence.
Emphasis on a stepwise approach guided by patient quality-of-life indicators.

Main Results:

Primary care physicians possess the necessary skills to diagnose and treat urinary incontinence.
Accurate identification of incontinence type is crucial for effective management.

Conclusions:

Effective management of urinary incontinence in primary care relies on accurate diagnosis and a patient-centered, stepwise treatment approach.
Utilizing patient-reported quality-of-life data enhances treatment success and patient outcomes.