![This is blank.](https://digitalhistology.org/wp-content/themes/histology-unified/imgs/trans.png)
Penis
The corpus spongiosum of the penis is surrounded by a tunica albuginea that is not as dense as that surrounding the corpora cavernosa. The urethra and its associated glands of Littre are visible in the center of the image. 100x
![Corpus spongiosum <p>The corpus spongiosum of the penis is surrounded by a tunica albuginea that is not as dense as that surrounding the corpora cavernosa. The urethra and its associated glands of Littre are visible in the center of the image. 100x</p>](https://digitalhistology.org/wp-content/uploads/2018/05/O.R.M.P.04.P01.png)
Corpus spongiosum
The corpus spongiosum of the penis is surrounded by a tunica albuginea that is not as dense as that surrounding the corpora cavernosa. The urethra and its associated glands of Littre are visible in the center of the image. 100x
![- Tunica albuginea <p>The corpus spongiosum of the penis is surrounded by a tunica albuginea that is not as dense as that surrounding the corpora cavernosa. The urethra and its associated glands of Littre are visible in the center of the image. 100x</p>](https://digitalhistology.org/wp-content/uploads/2018/05/O.R.M.P.04.P02.png)
- Tunica albuginea
The corpus spongiosum of the penis is surrounded by a tunica albuginea that is not as dense as that surrounding the corpora cavernosa. The urethra and its associated glands of Littre are visible in the center of the image. 100x
![- Urethra > <p>The male urethra in the penis, the penile urethra, is typically lined by a pseudostratified epithelium; however, several different epithelial types occur throughout the length of the urethra. </p>](https://digitalhistology.org/wp-content/uploads/2018/05/O.R.M.P.04.P03.png)
- Urethra >
The male urethra in the penis, the penile urethra, is typically lined by a pseudostratified epithelium; however, several different epithelial types occur throughout the length of the urethra.
![- Glands of Littre > <p>Mucus-secreting glands of Littre empty into the urethra throughout its length. These glands produce the first portion of the ejaculate and aid in lubrication during intercourse.</p>](https://digitalhistology.org/wp-content/uploads/2018/05/O.R.M.P.04.P04.png)
- Glands of Littre >
Mucus-secreting glands of Littre empty into the urethra throughout its length. These glands produce the first portion of the ejaculate and aid in lubrication during intercourse.
![- Cavernous spaces > <p>Cavernous spaces are visible in the corpus spongiosum. Some of these spaces are filled with blood and are, therefore, easy to identify at this magnification; more spaces are present but are more difficult to differentiate because they lacked blood at the time the tissue was removed. </p>](https://digitalhistology.org/wp-content/uploads/2018/05/O.R.M.P.04.P05.png)
- Cavernous spaces >
Cavernous spaces are visible in the corpus spongiosum. Some of these spaces are filled with blood and are, therefore, easy to identify at this magnification; more spaces are present but are more difficult to differentiate because they lacked blood at the time the tissue was removed.