Seminiferous tubule

Seminiferous tubules are located within the

The epithelium of the tubule consists of a type of sustentacular cells known as Sertoli cells, which are tall, columnar type cells that line the tubule.

In between the Sertoli cells are

There are two types: convoluted and straight, convoluted toward the lateral side, and straight as the tubule comes medially to form ducts that will exit the testis.

The seminiferous tubules are formed from the testis cords that develop from the primitive

• 
  Seminiferous tubule (right) with sperm (black, tiny, ovoid). H&E stain.
• 
  Longitudinal section through the left side of the scrotum and the left testis (seminiferous tubules visible in center, but not labeled).
• 
  Seminiferous tubule (transverse section).
• 
  Photomicrograph of section through rat testis, showing seminiferous tubules.

• Leydig cells