The sympathetic innervation to the penis comes from the T11-L1 segments on the spinal cord. These nerves synapse with the sympathetic trunk, which provides from the postganglionic sympathetic fibers that go through the pelvic plexus and be part of the cavernous nerve. The root consists of The 2 muscles (ischiocavernosus https://kenwoodchefxltitaniumkvl81470.elbloglibre.com/35468264/facts-about-service-revealed