
Epididymis: body and tail
The lumen of the duct of the epididymis presents a smooth outline because it is lined by a very tall, regular pseudostratified columnar epithelium with stereocilia. As the duct progresses from the head to the tail region, its epithelium decreases in height and the smooth muscle layer surrounding the epithelium increases in thickness. 40x

Epithelium >
The lumen of the duct of the epididymis presents a smooth outline because it is lined by a very tall, regular pseudostratified columnar epithelium with stereocilia. As the duct progresses from the head to the tail region, its epithelium decreases in height and the smooth muscle layer surrounding the epithelium increases in thickness. 40x

Smooth muscle
The lumen of the duct of the epididymis presents a smooth outline because it is lined by a very tall, regular pseudostratified columnar epithelium with stereocilia. As the duct progresses from the head to the tail region, its epithelium decreases in height and the smooth muscle layer surrounding the epithelium increases in thickness. 40x

Stored sperm
The lumen of the duct of the epididymis presents a smooth outline because it is lined by a very tall, regular pseudostratified columnar epithelium with stereocilia. As the duct progresses from the head to the tail region, its epithelium decreases in height and the smooth muscle layer surrounding the epithelium increases in thickness. 40x