Simplify the following text for a Grade 7 native English-speaking person.
Original: Rete testis is an anastomosing network of delicate tubules located in the hilum of the testicle ( mediastinum testis ) that carries sperm from the seminiferous tubules to the vasa efferentia .
Simplified: Rete testis is a network of small tubules found in the part of the testicle that carries sperm .