Obturator nerve
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| Nerve: Obturator nerve | ||
|---|---|---|
 | ||
| Structures surrounding right hip-joint. (Obturator nerve labeled at upper right.) | ||
 | ||
| Nerves of the right lower extremity. Front view. | ||
| Latin | nervus obturatorius | |
| Gray's | subject #212 953 | |
| Innervates | medial compartment of thigh | |
| From | Lumbar plexus | |
| To | posterior branch of obturator nerve, anterior branch of obturator nerve | |
| MeSH | [1] | |
The obturator nerve arises from the ventral divisions of the second, third, and fourth lumbar nerves; the branch from the third is the largest, while that from the second is often very small.
It descends through the fibers of the Psoas major, and emerges from its medial border near the brim of the pelvis; it then passes behind the common iliac vessels, and on the lateral side of the hypogastric vessels and ureter, which separate it from the ureter, and runs along the lateral wall of the lesser pelvis, above and in front of the obturator vessels, to the upper part of the obturator foramen.
Here it enters the thigh, through the obturator canal, and divides into an anterior and a posterior branch, which are separated at first by some of the fibers of the Obturator externus, and lower down by the Adductor brevis.
[edit] See also
[edit] Additional images
 Right hip bone. Internal surface. |
 Left Levator ani from within. |
 The Obturator externus. |
 The arteries of the pelvis. |
 Variations in origin and course of obturator artery. |
 The relations of the femoral and abdominal inguinal rings, seen from within the abdomen. Right side. |
 Plan of lumbar plexus. |
 The lumbar plexus and its branches. |
 Deep and superficial dissection of the lumbar plexus. |
 Dissection of side wall of pelvis showing sacral and pudendal plexuses. |
 Sacral plexus of the right side. |
[edit] External links
- Memorial University of Newfoundland - Anatomy at MUN nerve/lumbnerv
- Norman/Georgetown posteriorabdomen (posteriorabdmus&nerves)
- Image at UWash
- cutaneous field at neuroguide.com
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
lumbar plexus: iliohypogastric - ilioinguinal - genitofemoral (femoral branch/lumboinguinal, genital branch) - lateral cutaneous of thigh (patellar) - obturator (anterior, cutaneous, posterior, accessory) - femoral (anterior cutaneous branches, saphenous)
sacral/coccygeal plexus: to quadratus femoris - to obturator internus - to the piriformis - superior gluteal - inferior gluteal - posterior cutaneous of thigh (inferior cluneal, perineal branches)
sciatic: tibial (medial sural cutaneous, sural, medial calcaneal, medial plantar, lateral plantar) - common fibular (lateral sural cutaneous, deep fibular, superficial fibular, medial dorsal cutaneous, intermediate dorsal cutaneous)
pudendal plexus: perforating cutaneous - pudendal (dorsal of the penis/clitoris, inferior anal, perineal and posterior scrotal/labial) - anococcygeal
- de:Nervus obturatorius
- fr:Nerf obturateur
| This page uses content from the English-language version of Wikipedia. The original article was at Obturator nerve. The list of authors can be seen in the page history. As with Psychology Wiki, the text of Wikipedia is available under the GNU Free Documentation License. |
