The spermatic plexus (or testicular plexus) is derived from the renal plexus, receiving branches from the aortic plexus. It accompanies the internal spermatic artery to the testis.Lower half of right sympathetic cord.The scrotum. The spermatic plexus (or testicular plexus) is derived from the renal plexus, receiving branches from the aortic plexus. It accompanies the internal spermatic artery to the testis. This article incorporates text in the public domain from page 987 of the 20th edition of Gray's Anatomy (1918)