Bladder

The bladder is a hollow, muscular organ located in the lower abdomen that stores urine before it is excreted from the body. It is part of the urinary system, which also includes the kidneys, ureters, and urethra. The bladder is a highly elastic organ that can expand and contract as it fills with and empties urine.

Anatomy of the Bladder

The bladder is a balloon-shaped organ made up of smooth muscle tissue called the detrusor muscle. It has a triangular shape when empty and becomes rounder as it fills with urine. The bladder is lined with a mucous membrane called the urothelium, which helps protect the bladder wall from the corrosive effects of urine.

Function of the Bladder

The main function of the bladder is to store urine until it can be expelled from the body. When the bladder is full, it sends signals to the brain, which then triggers the urge to urinate. The muscles of the bladder can then contract to expel the urine through the urethra.

Common Bladder Conditions

Several conditions can affect the bladder, including urinary incontinence, urinary retention, urinary tract infections, and bladder cancer. These conditions can cause discomfort and disrupt the normal functioning of the bladder.

Study Guide

1. Describe the anatomy of the bladder, including its tissue composition and lining.
2. Explain the function of the bladder in the urinary system.
3. List and describe common bladder conditions that can affect its normal functioning.
4. Discuss the process of urination and the role of the bladder in this process.