![This is blank.](https://digitalhistology.org/wp-content/themes/histology-unified/imgs/trans.png)
Epididymis: body and tail
The lumen of the duct of the epididymis presents a smooth outline and is lined by pseudostratified columnar epithelium with stereocilia. This epithelium decreases in height as the duct progresses from the head to the tail region. A thin layer of smooth muscle surrounds the duct; this muscle increases in thickness from head to tail. 1000x
![Pseudostratified epithelium <p>The lumen of the duct of the epididymis presents a smooth outline and is lined by pseudostratified columnar epithelium with stereocilia. This epithelium decreases in height as the duct progresses from the head to the tail region. A thin layer of smooth muscle surrounds the duct; this muscle increases in thickness from head to tail. 1000x </p>](https://digitalhistology.org/wp-content/uploads/2018/05/O.R.M.E.BT_.05.P01.png)
Pseudostratified epithelium
The lumen of the duct of the epididymis presents a smooth outline and is lined by pseudostratified columnar epithelium with stereocilia. This epithelium decreases in height as the duct progresses from the head to the tail region. A thin layer of smooth muscle surrounds the duct; this muscle increases in thickness from head to tail. 1000x
![- Stereocilia <p>The lumen of the duct of the epididymis presents a smooth outline and is lined by pseudostratified columnar epithelium with stereocilia. This epithelium decreases in height as the duct progresses from the head to the tail region. A thin layer of smooth muscle surrounds the duct; this muscle increases in thickness from head to tail. 1000x </p>](https://digitalhistology.org/wp-content/uploads/2018/05/O.R.M.E.BT_.05.P02.png)
- Stereocilia
The lumen of the duct of the epididymis presents a smooth outline and is lined by pseudostratified columnar epithelium with stereocilia. This epithelium decreases in height as the duct progresses from the head to the tail region. A thin layer of smooth muscle surrounds the duct; this muscle increases in thickness from head to tail. 1000x
![- Terminal bars <p>The lumen of the duct of the epididymis presents a smooth outline and is lined by pseudostratified columnar epithelium with stereocilia. This epithelium decreases in height as the duct progresses from the head to the tail region. A thin layer of smooth muscle surrounds the duct; this muscle increases in thickness from head to tail. 1000x </p>](https://digitalhistology.org/wp-content/uploads/2018/05/O.R.M.E.BT_.05.P04.png)
- Terminal bars
The lumen of the duct of the epididymis presents a smooth outline and is lined by pseudostratified columnar epithelium with stereocilia. This epithelium decreases in height as the duct progresses from the head to the tail region. A thin layer of smooth muscle surrounds the duct; this muscle increases in thickness from head to tail. 1000x
![Smooth muscle <p>The lumen of the duct of the epididymis presents a smooth outline and is lined by pseudostratified columnar epithelium with stereocilia. This epithelium decreases in height as the duct progresses from the head to the tail region. A thin layer of smooth muscle surrounds the duct; this muscle increases in thickness from head to tail. 1000x </p>](https://digitalhistology.org/wp-content/uploads/2018/05/O.R.M.E.BT_.05.P03.png)
Smooth muscle
The lumen of the duct of the epididymis presents a smooth outline and is lined by pseudostratified columnar epithelium with stereocilia. This epithelium decreases in height as the duct progresses from the head to the tail region. A thin layer of smooth muscle surrounds the duct; this muscle increases in thickness from head to tail. 1000x