Lateral cutaneous nerve of thigh - Wikipedia Lateral cutaneous nerve of thigh Lateral cutaneous nerve of thigh Plan of lumbar plexus. ( Lateral femoral cutaneous visible at left. ) Cutaneous nerves of the right lower extremity. Front and posterior views. Details From lumbar plexus ( L2 -- L3 ) Innervates Skin on the lateral part of the thigh Identifiers Latin nervus cutaneus femoris lateralis Dorlands / Elsevier n_05 / 12565556 TA A14. 2.07. 011 FMA 16485 Anatomical terms of neuroanatomy ( edit on Wikidata ) This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations. Please help to improve this article by introducing more precise citations. ( June 2015 ) The lateral cutaneous nerve of the thigh ( also called the lateral femoral cutaneous nerve ) is a cutaneous nerve that innervates the skin on the lateral part of the thigh. Contents 1 Structure 2 Additional images 3 See also 4 References 5 External links Structure The lateral cutaneous nerve of the thigh is a nerve of the lumbar plexus. It arises from the dorsal divisions of the second and third lumbar nerves ( L2 - L3 ). It emerges from the lateral border of the psoas major at about its middle, and crosses the iliacus muscle obliquely, toward the anterior superior iliac spine ( ASIS ). It then passes under the inguinal ligament, through the lacuna musculorum and then over the sartorius muscle into the thigh, where it divides into an anterior and a posterior branch. The anterior branch becomes superficial about 10 cm below the inguinal ligament, and divides into branches which are distributed to the skin of the anterior and lateral parts of the thigh, as far as the knee. The terminal filaments of this nerve frequently communicate with the anterior cutaneous branches of the femoral nerve, and with the infrapatellar branch of the saphenous nerve, forming with them the peripatellar plexus. The posterior branch pierces the fascia lata, and subdivides into filaments which pass backward across the lateral and posterior surfaces of the thigh, supplying the skin from the level of the greater trochanter to the middle of the thigh. Entrapment is caused by compression of the nerve near the ASIS and inguinal ligament and is commonly known as Meralgia paraesthetica or Bernhardt - Roth syndrome. Additional images This gallery of anatomic features needs cleanup to abide by the medical manual of style. Galleries containing indiscriminate images of the article subject are discouraged ; please improve or remove the gallery accordingly. ( June 2015 ) Lateral cutaneous nerve of thigh and other structures passing behind the inguinal ligament The great saphenous vein and its tributaries at the fossa ovalis. The lumbar plexus and its branches. Deep and superficial dissection of the lumbar plexus. Diagram of segmental distribution of the lateral cutaneous nerve ( shaded ) and other nerves of the right leg. Front view. Cutaneous nerves of the right lower extremity. Front and posterior views. See also Cutaneous nerve Posterior cutaneous nerve of thigh Meralgia paraesthetica References This article incorporates text in the public domain from the 20th edition of Gray 's Anatomy ( 1918 ) External links Lateral_femoral_cutaneous_nerve at the Duke University Health System 's Orthopedics program Anatomy photo : 40 : 17 - 0201 at the SUNY Downstate Medical Center - `` Posterior Abdominal Wall : Nerves of the Lumbar Plexus '' posteriorabdomen at The Anatomy Lesson by Wesley Norman ( Georgetown University ) ( posteriorabdmus&nerves ) Nerves of the lumbosacral plexus Lumbar plexus iliohypogastric lateral cutaneous branch anterior cutaneous branch ilioinguinal anterior scrotal ♂ / labial ♀ genitofemoral femoral branch genital branch Lateral cutaneous patellar obturator anterior cutaneous posterior accessory femoral anterior cutaneous branches saphenous ( infrapatellar medial crural cutaneous sacral plexus sciatic common peroneal lateral sural cutaneous communicating branch deep peroneal lateral terminal branch medial terminal branch dorsal digital superficial peroneal medial dorsal cutaneous intermediate dorsal cutaneous dorsal digital tibial medial sural cutaneous medial calcaneal medial plantar ( common plantar digital nerves proper plantar digital ) lateral plantar ( deep branch superficial branch common plantar digital proper plantar digital ) sural lateral dorsal cutaneous lateral calcaneal other Muscular superior gluteal inferior gluteal lateral rotator group ( to quadratus femoris to obturator internus to the piriformis ) cutaneous : posterior cutaneous of thigh ( inferior cluneal perineal branches ) perforating cutaneous coccygeal plexus pudendal inferior anal perineal deep posterior scrotal ♂ / labial ♀ dorsal of the penis ♂ / clitoris ♀ anococcygeal Related cutaneous innervation of the lower limbs This neuroscience article is a stub. You can help Wikipedia by expanding it. Retrieved from `` https://en.wikipedia.org/w/index.php?title=Lateral_cutaneous_nerve_of_thigh&oldid=797594831 '' Categories : Wikipedia articles incorporating text from the 20th edition of Gray 's Anatomy ( 1918 ) Neuroscience stubs Nerves of the lower limb and lower torso Hidden categories : Medicine infobox template using GraySubject or GrayPage Medicine infobox template using Dorlands parameter Articles lacking in - text citations from June 2015 All articles lacking in - text citations Articles with gallery cleanup tags All stub articles Talk Contents About Wikipedia Català Deutsch Español فارسی Français Italiano Polski Русский Edit links This page was last edited on 28 August 2017, at 03 : 05. About Wikipedia

Question: nerve root of lateral cutaneous nerve of thigh
Answer: the dorsal divisions of the second and third lumbar nerves (L2-L3)