These coiled tubules are tightly packed within the testis. They also contain Sertoli cells which mediate spermatogenesis. A thin lamina propria lies between the seminferous tubules. Leydig cells within the lamina propria secrete testosterone. A teratoma may form from a primordial germ cell within the testis.
Teratomas often contain several recognizable tissues.
The Epididymus 1. Entry of sperm into the epididymus via the efferent ductules 2. Basic structure of the epididymus The epididymus is a highly coiled tube. The tube is surrounded by smooth muscle which thickens distally. Epithelium of the epididymus The epididymus is lined by a pseudostratified epithelium.