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Information about Obturator Nerve

Nerve:
Structures surrounding right hip-joint. (Obturator nerve labeled at upper right.)
Nerves of the right lower extremity. Front view.
Latinnervus obturatorius
subject #212 953
Innervatesmedial compartment of thigh
FromLumbar plexus
Toposterior branch of obturator nerve, anterior branch of obturator nerve
Dorlands/Elsevier n_05/12566297
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.

The Obturator nerve is responsible for the sensory innervation of the skin of the medial aspect of the thigh, and the motor innervation of the adductor muscles of the lower extremity (external obturator, pectineus, adductor longus, adductor brevis, adductor magnus, gracilis)

See also

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.


External links

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 As such, some of the information contained herein may be outdated.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.

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Nerves of lower limbs and lower torso: the lumbosacral plexus
lumbar plexusiliohypogastric - ilioinguinal - genitofemoral (femoral branch/lumboinguinal, genital branch) - lateral cutaneous of thigh (patellar) - obturator (anterior, cutaneous, posterior, accessory) - femoral (anterior cutaneous branches, saphenous)
sacral/coccygeal plexusto 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 plexusperforating cutaneous - pudendal (dorsal of the penis/clitoris, inferior anal, perineal and posterior scrotal/labial) - anococcygeal
cutaneous innervation of the lower limbs
hip is the bony projection of the femur which is known as the greater trochanter, and the overlying muscle and fat. The hip joint is the joint between the femur and acetabulum of the pelvis and its primary function is to support the weight of the body in both static
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Latin}}} 
Official status
Official language of: Vatican City
Used for official purposes, but not spoken in everyday speech
Regulated by: Opus Fundatum Latinitas
Roman Catholic Church
Language codes
ISO 639-1: la
ISO 639-2: lat
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The medial fascial compartment of thigh contains the hip adductors:
  • gracilis
  • pectineus
  • adductor brevis
  • adductor longus
  • adductor magnus
The obturator nerve supplies the hip adductors in this compartment.
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The lumbar plexus is a nervous plexus in the lumbar region of the body. It is formed by the loops of communication between the anterior divisions of the first three and the greater part of the fourth lumbar nerves; the first lumbar often receives a branch from the last thoracic
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The posterior branch of the obturator nerve pierces the anterior part of the Obturator externus, and supplies this muscle; it then passes behind the Adductor brevis on the front of the Adductor magnus, where it divides into numerous muscular branches which are distributed to the
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The anterior branch of the obturator nerve leaves the pelvis in front of the Obturator externus and descends in front of the Adductor brevis, and behind the Pectineus and Adductor longus; at the lower border of the latter muscle it communicates with the anterior cutaneous and
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Elsevier, the world's largest publisher of medical and scientific literature, forms part of the Reed Elsevier group. Based in Amsterdam, the company has substantial operations in the UK, USA and elsewhere.
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The lumbar nerves are the five spinal nerves emerging from the lumbar vertebrae. They are divided into posterior and anterior divisions.

Posterior divisions

The medial branches of the posterior divisions of the lumbar nerves run close to the articular processes of the
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The Psoas major is a long fusiform muscle placed on the side of the lumbar region of the vertebral column and brim of the lesser pelvis.

Location

Origin

It arises:

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pelvic brim. The "linea terminalis" consists of the pectineal line, the pubic crest and the arcuate line

External links

  • SUNY Labs 44:os-0504
This article was originally based on an entry from a public domain edition of Gray's Anatomy.
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The common iliac arteries are two large arteries, about 4cm long in adults but more than a centimetre in diameter, that originate from the aortic bifurcation and terminate when bifurcating into the external iliac artery and internal iliac artery.
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The internal iliac artery (formerly known as the hypogastric artery) is the main artery of the pelvis.

Structure

The internal iliac artery supplies the walls and viscera of the pelvis, the buttock, the reproductive organs, and the medial compartment of the thigh.
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In human anatomy, the ureters are the ducts that carry urine from the kidneys to the urinary bladder, passing anterior to the psoas major. The ureters are muscular tubes that can propel urine along by the motions of peristalsis. In the adult, the ureters are usually 25-30cm long.
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The lesser pelvis (or true pelvis) is that part of the pelvic cavity which is situated below and behind the pelvic brim.

Its bony walls are more complete than those of the greater pelvis.
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The obturator artery passes antero-inferiorly (forwards and downwards) on the lateral wall of the pelvis, to the upper part of the obturator foramen, and, escaping from the pelvic cavity through the obturator canal, it divides into both an anterior and a posterior branch.
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The obturator foramen is the hole created by the ischium and pubic bones of the pelvis through which nerves and muscles pass.
  • In the male it is large and of an oval form, its longest diameter slanting obliquely from before backward.

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The obturator canal is a passageway formed in the obturator foramen by part of the obturator membrane. It connects the pelvis to the thigh.

The obturator artery, obturator vein, and obturator nerve all travel through the canal.
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The obturator externus muscle is a muscle of the medial compartment of the thigh.

The obturator externus is a flat, triangular muscle, which covers the outer surface of the anterior wall of the pelvis.
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The adductor brevis is a muscle in the thigh situated immediately behind the pectineus and adductor longus.

It is somewhat triangular in form, and arises by a narrow origin from the outer surfaces of the superior and inferior rami of the pubis, between the gracilis and
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cutaneous branch of the obturator nerve.

When this is so, it emerges from beneath the lower border of the Adductor longus, descends along the posterior margin of the Sartorius to the medial side of the knee, where it pierces the deep fascia, communicates with the saphenous
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Duke University is a private coeducational research university located in Durham, North Carolina, USA. Founded by Methodists and Quakers in the present-day town of Trinity in 1838, the school moved to Durham in 1892.[9] In 1924, tobacco industrialist James B.
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The State University of New York Health Science Center at Brooklyn, better known as SUNY Downstate Medical Center, is an academic medical center and is the only one of its kind in the Borough of Brooklyn in New York City.
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Medical University of Vienna , formerly the faculty of medicine of the University of Vienna, became an independent university on January 1, 2004. The independence of medical schools from the structure of "general" universities was part of a larger reform of the Austrian university
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Memorial University of Newfoundland, (popularly known as Memorial University or "MUN") is a comprehensive university located primarily in St. John's, Newfoundland and Labrador, Canada.
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Georgetown University is a private, Jesuit, research university, located in Washington, D.C.'s Georgetown neighborhood. Father John Carroll founded the school in 1789, though its roots extend back to 1634.
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Public domain comprises the body of knowledge and innovation (especially creative works such as writing, art, music, and inventions) in relation to which no person or other legal entity can establish or maintain proprietary interests within a particular legal jurisdiction.
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Henry Gray's Anatomy of the Human Body (or Gray's Anatomy as it has commonly been shortened) is an English-language human anatomy textbook widely regarded as a classic work on the subject.
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A nerve is an enclosed, cable-like bundle of axons (the long, slender projection of a neuron). Neurons are sometimes called nerve cells, though this term is technically imprecise since many neurons do not form nerves, and nerves also include the glial cells that
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In common usage, a human leg is the lower limb of the body, extending from the hip to the ankle, and including the thigh, the knee, and the cnemis.[1] The largest bone in the human body, the femur, is in the leg.
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Torso is an anatomical term for the central part of the many animal bodies (including that of the human) from which extend the neck and limbs. It is sometimes referred to as the trunk. The torso includes the thorax and abdomen.
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