
Testis Overview
At the posterior region of the immature testis, the connective tissue forming tunica albuginea thickens and protrudes into the testis, forming the mediastinum. The mediastinum contains the rete testis, the beginning of the ducts that transport sperm to the outside. Tunica vaginalis is lacking posteriorly because the testis develops as a retroperitoneal structure. Immature testis 20x

Tunica albuginea
At the posterior region of the immature testis, the connective tissue forming tunica albuginea thickens and protrudes into the testis, forming the mediastinum. The mediastinum contains the rete testis, the beginning of the ducts that transport sperm to the outside. Tunica vaginalis is lacking posteriorly because the testis develops as a retroperitoneal structure. Immature testis 20x

Processus vaginalis
At the posterior region of the immature testis, the connective tissue forming tunica albuginea thickens and protrudes into the testis, forming the mediastinum. The mediastinum contains the rete testis, the beginning of the ducts that transport sperm to the outside. Tunica vaginalis is lacking posteriorly because the testis develops as a retroperitoneal structure. Immature testis 20x

Mediastinum
At the posterior region of the immature testis, the connective tissue forming tunica albuginea thickens and protrudes into the testis, forming the mediastinum. The mediastinum contains the rete testis, the beginning of the ducts that transport sperm to the outside. Tunica vaginalis is lacking posteriorly because the testis develops as a retroperitoneal structure. Immature testis 20x

Rete testis
At the posterior region of the immature testis, the connective tissue forming tunica albuginea thickens and protrudes into the testis, forming the mediastinum. The mediastinum contains the rete testis, the beginning of the ducts that transport sperm to the outside. Tunica vaginalis is lacking posteriorly because the testis develops as a retroperitoneal structure. Immature testis 20x