Connection lost. Please refresh the page.
Get help How to study Login Register


Learning objectives

After completing this study unit you will be able to:

  1. Understand the histological structure of the penis.
  2. Identify its parts under the microscope.

Browse atlas

The penis is a copulatory organ of the external genitalia of the males. It consists of three parts; root (radix), body (shaft) and glans. 

From the perspective of histology, the most remarkable feature of the penis is its core of erectile tissue. The penis is composed of three cylindrical columns of erectile tissue, namely the two corpora cavernosa and the corpus spongiosum, which are bound together by a dense fibroelastic layer called the tunica albuginea. The corpora contain irregular vascular spaces, lined by endothelium. These fill with blood during erection, while the corpus spongiosum protects the urethra from compression by the engorged corpora cavernosa.

The tunica albuginea is surrounded by a layer of superficial fascia that contains connective tissue, prominent blood vessels, and nerves. Surrounding the superficial fascia is the outermost sheath of penile skin which is covered with stratified squamous keratinized epithelium. Unless circumcised, it extends over the glans as the prepuce or foreskin, which acts as a retractable protective fold of skin. 

Ready to review all these structures in further detail? Browse our image gallery below:

Take a quiz

With the following quiz you can now apply and test your newly acquired knowledge:

Have you challenged yourself enough? To adjust your focus and choose the topics you’ll get quizzed on, try out our customizable quiz.

Well done!

Related articles

Continue your learning

Register now and grab your free ultimate anatomy study guide!