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Individual differences |
Methods | Statistics | Clinical | Educational | Industrial | Professional items | World psychology |
Biological: Behavioural genetics · Evolutionary psychology · Neuroanatomy · Neurochemistry · Neuroendocrinology · Neuroscience · Psychoneuroimmunology · Physiological Psychology · Psychopharmacology (Index, Outline)
|Nerve: Ilioinguinal nerve|
|Plan of the lumbar plexus. The ilioinguinal is visible at the upper left.|
|The lumbar plexus and its branches. The ilioinguinal nerve is visible at the upper left.|
|Gray's||subject #212 952|
It emerges from the lateral border of the psoas major just below the iliohypogastric, and, passing obliquely across the quadratus lumborum and iliacus, perforates the transversus abdominis, near the anterior part of the iliac crest, and communicates with the iliohypogastric nerve between the transversus and the obliquus internus.
The nerve then pierces the obliquus internus, distributing filaments to it, and, accompanying the spermatic cord through the subcutaneous inguinal ring, is distributed to the skin of the upper and medial part of the thigh, and to the following locations in the male and female:
- In the male ("anterior scrotal nerve"): to the skin over the root of the penis and upper part of the scrotum.
- In the female ("anterior labial nerve"): to the skin covering the mons pubis and labium majus.
The size of this nerve is in inverse proportion to that of the iliohypogastric.
Occasionally it is very small, and ends by joining the iliohypogastric; in such cases, a branch from the iliohypogastric takes the place of the ilioinguinal, or the latter nerve may be altogether absent.
- Duke Orthopedics ilioinguinal_nerve
- Atlas of anatomy at UMich abdo_wall70 - "Posterior abdominal wall, dissection, anterior view"
- SUNY Labs 35:05-0102 - "Anterior Abdominal Wall: The Iliohypogastric and IlioInguinal Nerves"
- SUNY Labs 40:17-0102 - "Posterior Abdominal Wall: Nerves of the Lumbar Plexus"
- State University of New York (SUNY) Anatomy Image 7433
- Memorial University of Newfoundland - Anatomy at MUN nerve/lumbnerv
- Norman/Georgetown posteriorabdomen (posteriorabdmus&nerves)
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 As such, some of the information contained herein may be outdated.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)
- de:Nervus ilioinguinalis
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