Slide 1 Whole Fetal Testis
The human (5 1/2 month fetal) testis is covered by a dense fibrous tunica albuginea which contain developing blood vessels. Notice how the seminiferous tubules which contain only Sertoli cells and prospermatogonia converge at the mediastinum. The blood vessels to the right of the mediastinum are part of the developing pampiniform venous plexus.

Bar=1 mm

Expanded View