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Encyclopedia > Posterior cutaneous nerve of thigh
Nerve: Posterior cutaneous nerve of thigh
Cross-section through the middle of the thigh. (Posterior femoral cutaneous nerve labeled at bottom.)
Nerves of the right lower extremity. Posterior view. (Post. fem. cutaneus labeled at upper left.)
Latin nervus cutaneus femoris posterior
Gray's subject #213 959
Dorlands/Elsevier n_05/12565565

The posterior cutaneous nerve of the thigh (also called the posterior femoral cutaneous nerve) provides innervation to the skin of the posterior surface of the thigh and leg, as well as to the skin of the perineum. Image File history File links Download high-resolution version (683x700, 190 KB) [edit] Summary [edit] Licensing File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Fascial compartment Wikipedia:Grays Anatomy images with missing articles 9 Quadriceps muscle Vastus... Diagram of the human thigh bone In humans the thigh is the area between the pelvis and buttocks and the knee. ... Image File history File links Download high resolution version (344x1000, 115 KB) Summary Licensing File links The following pages link to this file: Sciatic nerve Wikipedia:Grays Anatomy images with missing articles 17 Tibial nerve Common peroneal nerve Femoral nerve List of images in Grays Anatomy: IX. Neurology... Latin is an ancient Indo-European language originally spoken in Latium, the region immediately surrounding Rome. ... Elseviers logo Elsevier, the worlds largest publisher of medical and scientific literature, forms part of the Reed Elsevier group. ... In zootomy and dermatology, skin is an organ of the integumentary system made up of multiple layers of epithelial tissues that guard underlying muscles and organs. ... Diagram of the human thigh bone In humans the thigh is the area between the pelvis and buttocks and the knee. ... For other senses of this word, see leg (disambiguation). ... The muscles of the male perineum In human anatomy, the perineum is generally defined as the surface region in both males and females between the pubic symphysis and the coccyx. ...

Contents

Structure

The posterior cutaneous nerve of the thigh is a nerve from the sacral plexus. It arises partly from the dorsal divisions of the first and second, and from the ventral divisions of the second and third sacral nerves, and issues from the pelvis through the greater sciatic foramen below the piriformis muscle. In human anatomy, the Sacral plexus refers to the nerve plexus emerging from the sacral vertebrae (S1-S4), and which provides nerves for the pelvis and lower limbs. ... The greater sciatic foramen is bounded, in front and above, by the posterior border of the hip bone; behind, by the sacrotuberous ligament; and below, by the sacrospinous ligament. ... The piriformis (from Latin piriformis = pear shaped) is a muscle in the gluteal region of the lower limb. ...


It then descends beneath the gluteus maximus with the inferior gluteal artery, and runs down the back of the thigh beneath the fascia lata, and over the long head of the biceps femoris to the back of the knee; here it pierces the deep fascia and accompanies the small saphenous vein to about the middle of the back of the leg, its terminal twigs communicating with the sural nerve. The gluteus maximus is the largest of the gluteus muscles which are located in the buttock. ... The inferior gluteal artery (sciatic artery), the larger of the two terminal branches of the anterior trunk of the hypogastric, is distributed chiefly to the buttock and back of the thigh. ... The deep fascia of the thigh is named, from its great extent, the fascia lata; it constitutes an investment for the whole of this region of the limb, but varies in thickness in different parts. ... The biceps femoris, as its name implies, has two heads. ... Fascia is specialized connective tissue layer which surrounds muscles, bones, and joints, providing support and protection and giving structure to the body. ... Small saphenous vein and its tributaries. ... The sural nerve (short saphenous nerve), formed by the junction of the medial sural cutaneous with the peroneal anastomotic branch, passes downward near the lateral margin of the tendo calcaneus, lying close to the small saphenous vein, to the interval between the lateral malleolus and the calcaneus. ...


Branches

Its branches are all cutaneous, and are distributed to the gluteal region, the perineum, and the back of the thigh and leg.

  • The inferior clunial nerves, three or four in number, turn upward around the lower border of the gluteus maximus, and supply the skin covering the lower and lateral part of that muscle.
  • The perineal branches are distributed to the skin at the upper and medial side of the thigh.
  • The main part to the back of the thigh and leg consists of numerous filaments derived from both sides of the nerve, and distributed to the skin covering the back and medial side of the thigh, the popliteal fossa, and the upper part of the back of the leg.

The gluteus maximus is the largest of the gluteus muscles which are located in the buttock. ... Diagram of the human thigh bone In humans the thigh is the area between the pelvis and buttocks and the knee. ... The popliteal fossa is a space or shallow depression located at the back of the knee-joint. ...

Additional images

See also

  • Clunial nerves

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. Duke University is a private coeducational research university located in Durham, North Carolina, USA. The school, which officially became Duke University in 1924, traces its institutional roots to 1838. ... The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...

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Lumbosacral plexus

lumbar plexus: iliohypogastric - ilioinguinal - genitofemoral (femoral branch/lumboinguinal, genital branch) - lateral cutaneous of thigh (patellar) - obturator (accessory obturator) - femoral (saphenous) - lumbosacral trunk The anterior divisions of the lumbar nerve, sacral nerve, and coccygeal nerves form the lumbosacral plexus, the first lumbar nerve being frequently joined by a branch from the twelfth thoracic. ... Grays Fig. ... The Iliohypogastric Nerve arises from the first lumbar nerve. ... The Ilioinguinal Nerve, smaller than the Iliohypogastric nerve, arises with it from the first lumbar nerve. ... In human anatomy, the genitofemoral nerve originates from the upper part of the lumbar plexus of spinal nerves. ... The lumboinguinal nerve (femoral or crural branch of genitofemoral) descends on the external iliac artery, sending a few filaments around it, and, passing beneath the inguinal ligament, enters the sheath of the femoral vessels, lying superficial and lateral to the femoral artery. ... The genital branch of the genitofemoral nerve (external spermatic nerve) passes outward on the Psoas major, and pierces the fascia transversalis, or passes through the abdominal inguinal ring; it then descends behind the spermatic cord to the scrotum, supplies the Cremaster, and gives a few filaments to the skin of... 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. ... The terminal filaments of the lateral femoral cutaneous 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 patellar plexus. ... 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. ... The Accessory Obturator Nerve is present in about 29 per cent. ... The Femoral Nerve supplies innervation the anterior portion of the leg. ... The lumbosacral trunk is nervous tissue that connects the lumbar plexus with the sacral plexus. ...


sacral/coccygeal plexus: to quadratus femoris - to obturator internus - to the piriformis - superior gluteal - inferior gluteal - posterior cutaneous of thigh
sciatic: tibial (sural - medial plantar - lateral plantar) - common fibular (deep fibular - superficial fibular) In human anatomy, the Sacral plexus refers to the nerve plexus emerging from the sacral vertebrae (S1-S4), and which provides nerves for the pelvis and lower limbs. ... The nerve to quadratus femoris is a nerve that provides innervation to the quadratus femoris and gemellus inferior muscles. ... The nerve to obturator internus is a nerve that innervates the obturator internus and gemellus superior muscles. ... The nerve to piriformis is a nerve that innervates the piriformis muscle. ... The superior gluteal nerve is a nerve that originates in the pelvis which supplies the gluteus medius, the gluteus minimus, and the tensor fasciae latae muscles. ... The Superior Gluteal Nerve () arises from the dorsal divisions of the fourth and fifth lumbar and first sacral nerves: it leaves the pelvis through the greater sciatic foramen above the Piriformis, accompanied by the superior gluteal vessels, and divides into a superior and an inferior branch. ... This article or section may be confusing or unclear for some readers, and should be edited to rectify this. ... The Tibial Nerve The tibial nerve passes through the popliteal fossa to pass below the arch of soleus. ... The sural nerve (short saphenous nerve), formed by the junction of the medial sural cutaneous with the peroneal anastomotic branch, passes downward near the lateral margin of the tendo calcaneus, lying close to the small saphenous vein, to the interval between the lateral malleolus and the calcaneus. ... The medial plantar nerve (internal plantar nerve), the larger of the two terminal divisions of the tibial nerve, accompanies the medial plantar artery. ... The Lateral Plantar Nerve (external plantar nerve) supplies the skin of the fifth toe and lateral half of the fourth, as well as most of the deep muscles, its distribution being similar to that of the ulnar nerve in the hand. ... The common peroneal nerve (common fibular nerve; external popliteal nerve; peroneal nerve), about one-half the size of the tibial nerve, is derived from the dorsal branches of the fourth and fifth lumbar and the first and second sacral nerves. ... The Deep fibular nerve (deep peroneal nerve) begins at the bifurcation of the common peroneal nerve, between the fibula and upper part of the Fibularis (Peronæus) longus, passes infero-medially, deep to Extensor digitorum longus, to the anterior surface of the interosseous membrane, and comes into relation with the...


pudendal plexus: perforating cutaneous - pudendal (dorsal of the penis/clitoris, inferior anal, perineal and posterior scrotal/labial) - anococcygeal The pudendal plexus is not sharply marked off from the sacral plexus, and as a consequence some of the branches which spring from it may arise in conjunction with those of the sacral plexus. ... The Perforating Cutaneous Nerve usually arises from the posterior surface of the second and third sacral nerves. ... The pudendal nerve is responsible for orgasm, urination, and defecation in both sexes. ... The dorsal nerve of the penis is the deepest division of the pudendal nerve; it accompanies the internal pudendal artery along the ramus of the ischium; it then runs forward along the margin of the inferior ramus of the pubis, between the superior and inferior layers of the fascia of... The dorsal nerve of the clitoris is a nerve in females that branches off the pudendal nerve to innervate the clitoris. ... The Inferior rectal nerves (inferior anal nerves, inferior hemorrhoidal nerve) occasionally arises directly from the sacral plexus; it crosses the ischiorectal fossa, with the inferior hemorrhoidal vessels, toward the anal canal and the lower end of the rectum, and is distributed to the Sphincter ani externus and to the integument... The perineal nerve is a nerve arising from the pudendal nerve that supplies the perineum. ... The posterior scrotal (or labial) branches; superficial peroneal nerves) are two in number, medial and lateral. ... Anococcygeal Nerves: The fifth sacral nerve receives a communicating filament from the fourth, and unites with the coccygeal nerve to form the coccygeal plexus. ...


 
 

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