The Male Urethra: A Detailed Line Drawing

Nov 13, 2020

When it comes to understanding the male anatomy, the urethra plays a crucial role in the urinary and reproductive systems. In this detailed line drawing provided by Shout It Marketing, we delve into the intricate structure and function of the male urethra.

Overview of the Male Urethra

The urethra is a tube that carries urine from the bladder and semen from the reproductive system out of the body. In males, the urethra is longer than in females and has dual functions for urination and ejaculation. It extends from the bladder to the tip of the penis and is divided into several segments, each with specific functions.

Anatomy of the Male Urethra

The male urethra is divided into four main parts: the preprostatic urethra, prostatic urethra, membranous urethra, and penile (spongy) urethra. Each segment has unique characteristics and functions that are vital to the overall process of urination and reproduction.

Preprostatic Urethra

The preprostatic urethra is the initial segment of the male urethra and is located within the bladder. It serves as a conduit for urine flow from the bladder to the prostatic urethra, where it continues its journey towards the outside of the body.

Prostatic Urethra

The prostatic urethra passes through the prostate gland and is surrounded by prostatic tissue. It is responsible for carrying both urine and semen and plays a crucial role in the male reproductive system.

Membranous Urethra

The membranous urethra is a short segment that traverses the urogenital diaphragm. It is a narrow part of the urethra that is susceptible to injury due to its location.

Penile (Spongy) Urethra

The penile urethra, also known as the spongy urethra, extends through the length of the penis and opens at the urethral meatus. It is the final stretch of the urethra where urine and semen exit the body during urination and ejaculation.

Function of the Male Urethra

The male urethra serves dual purposes in the excretory and reproductive systems. It allows for the passage of urine from the bladder to the external environment and facilitates the transport of semen during ejaculation. The intricate structure of the urethra ensures the proper flow of fluids and prevents any backflow that could lead to complications.


Understanding the anatomy and function of the male urethra is essential for maintaining overall urinary health and reproductive well-being. The detailed line drawing provided by Shout It Marketing offers valuable insights into this crucial aspect of male physiology.