spermatic plexus spermatic plexus 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. spermatic plexusthe celiac ganglia with the sympathetic plexuses of the abdominal viscera radiating from the ganglia. (spermatic plexus labeled at right, third from the bottom.)detailsfromrenal plexusidentifierslatinplexus testicularis, plexus spermaticusta98a14.3.03.035mta26707fma6637anatomical terms of neuroanatomy additional images lower half of right sympathetic cord. the scrotum.