Lumbar Plexus Anatomy Schema Subcostal nerve (T12), White and gray rami communicantes, Iliohypogastric nerve, Ilioinguinal nerve, Genitofemoral nerve, Lateral femoral cutaneous nerve, Gray rami communicantes, Muscular branches to psoas major and iliacus muscles, Femoral nerve, Accessory obturator nerve (inconstant), Obturator nerve, Lumbosacral trunk, Respiratory diaphragm (cut), Subcostal nerve (T12), Sympathetic trunk, Iliohypogastric nerve, Ilioinguinal nerve, Genitofemoral nerve (cut)…