part_of part of part of has part has part has_part overlaps overlaps testis embryonic structure connective tissue mediastinum mediastinum testis http://upload.wikimedia.org/wikipedia/commons/b/b5/Hodenschema.svg hilum of testicle uberon EMAPA:18331 testis mediastinum The mediastinum testis is a network of fibrous connective tissue that extends from the upper to near the lower extremity of the testis, and is wider above than below. From its front and sides numerous imperfect septa (trabeculæ) are given off, which radiate toward the surface of the organ, and are attached to the tunica albuginea. They divide the interior of the organ into a number of incomplete spaces, called lobules. These are somewhat cone-shaped, being broad at their bases at the surface of the gland, and becoming narrower as they converge to the mediastinum. The mediastinum supports the rete testis and blood vessels of the testis in their passage to and from the substance of the gland[WP]. UBERON:0005051 FMA:19812 SCTID:362279007 mediastinum of testis Wikipedia:Mediastinum_testis MA:0003240 body of highmore