Structure of the Bladder

The bladder is a flexible, muscular sac that can expand and contract. It is composed of several layers of tissue, including the inner mucous membrane, submucosa, muscular layer, and outer serous layer. The muscular layer, known as the detrusor muscle, contracts to expel urine from the bladder during urination.

Function of the Bladder

The main function of the bladder is to store urine produced by the kidneys. As the kidneys filter waste products from the blood, urine is produced and transported to the bladder through the ureters. The bladder can expand to accommodate varying volumes of urine. When the bladder is full, it sends signals to the brain, triggering the urge to urinate. During urination, the detrusor muscle contracts, and the urinary sphincter relaxes, allowing urine to be expelled through the urethra.

Common Bladder Disorders

There are several disorders and conditions that can affect the bladder, including urinary incontinence, urinary retention, bladder infections (cystitis), bladder cancer, and interstitial cystitis. Understanding the structure and function of the bladder can help in the prevention and management of these conditions.

Study Guide

Anatomy: Understand the structure of the bladder, including its layers and the detrusor muscle.
Function: Learn about the role of the bladder in storing and expelling urine, as well as the signaling process that triggers the urge to urinate.
Disorders: Familiarize yourself with common bladder disorders and their symptoms, causes, and treatment options.
Healthy Habits: Explore the importance of maintaining good bladder health through proper hydration, regular urination, and seeking medical attention for any concerning symptoms.