Urethra

The urethra is a tube that connects the urinary bladder to the external environment for the removal of urine from the body. In males, it also serves as a passageway for semen during ejaculation.

Anatomy of the Urethra

The urethra is divided into three main parts:

1. Prostatic urethra: This part of the urethra runs within the prostate gland in males.
2. Membranous urethra: This short segment of the urethra passes through the pelvic floor muscles.
3. Spongy (penile) urethra: This is the longest part of the urethra and extends through the penis to the external urethral orifice.

Functions of the Urethra

The primary function of the urethra is the excretion of urine from the body. In males, it also functions as a passageway for semen during ejaculation.

Common Conditions and Diseases

Some common conditions and diseases related to the urethra include:

• Urinary tract infections (UTIs): Infections of the urethra can lead to painful urination and other symptoms.
• Urethral stricture: Narrowing of the urethra, often due to scarring, which can obstruct the flow of urine.
• Urethritis: Inflammation of the urethra, often caused by infections.

Study Guide

When studying the urethra, it's important to focus on the following key points:

1. Understand the anatomy of the urethra, including its three main parts.
2. Learn the functions of the urethra, both in males and females.
3. Be familiar with common conditions and diseases that can affect the urethra and their symptoms.
4. Understand the importance of maintaining urethral health and ways to prevent infections and other issues.