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Topic: Sacral plexus



  
 Dorlands Medical Dictionary
Plexus lumbalis (lumbar plexus), in yellow, in anterior (A) and lateral (B) views, with the divisions forming the lumbosacral trunk shown in white, as is the sacral plexus.
brachia´lis [TA] brachial plexus: a plexus originating from the ventral branches of the last four cervical spinal nerves and most of the ventral branch of the first thoracic spinal nerves.
caro´ticus commu´nis [TA] common carotid plexus: a nerve plexus on the common carotid artery, formed by branches of the internal and external carotid plexuses and the cervical sympathetic ganglia.
http://www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspzQzpgzEzzSzppdocszSzuszSzcommonzSzdorlandszSzdorlandzSzdmd_p_24zPzhtm   (3794 words)

  
 ANATOMY OF THE ANAL CANAL
This distension force stimulates intramural nerve plexus from which stimulation passes to the sacral area of spinal cord (through preganglionic, parasympathetic afferent fibers originating in the second, third, and fourth sacral segment) then to the higher centers.
2 - The intermediate loop is innervated by the perineal branch of the fourth sacral nerve.
Non-adrenergic non-cholinergic nerve mediated relaxation of internal anal sphincter was blocked by inhibition of nitric oxide synthetase.
http://www.tabebak.com/Thesis/Anal%20Fissure/ANATOMY%20OF%20THE%20ANAL%20CANAL.htm   (3794 words)

  
 Dorlands Medical Dictionary
dii, [TA]  middle cluneal nerves: general sensory nerve branches of the plexus formed by the lateral branches of dorsal rami of the first four sacral nerves, innervating ligaments of the sacrum and the skin over the posterior buttocks; called also rami gluteales mediales, rami clunium mediales, and middle gluteal nerves.
nor, [TA]  lesser occipital nerve: origin, superficial cervical plexus—C2–C3; distribution, ascends behind the auricle and supplies some of the skin on the side of the head and on the cranial surface of the auricle; modality, general sensory.
rior, [TA]  inferior cervical cardiac nerve: origin, cervicothoracic ganglion; distribution, heart via cardiac plexus; modality, sympathetic (accelerator) and visceral afferent (chiefly pain).
http://www.merckmedicus.com/pp/us/hcp/thcp_dorlands_content.jsp?pg=/ppdocs/us/common/dorlands/dorland/dmd-n-009.htm   (3728 words)

  
 Llewellyn Encyclopedia: Svadhisthana - The Seat of Life
It corresponds to the sacral vertebrae and the nerve ganglion called the sacral plexus.
This plexus hooks into the sciatic nerve and is a center of motion for the body.
http://www.llewellynencyclopedia.com/article/253   (3728 words)

  
 IX. Neurology. 6d. The Lumbosacral Plexus. Gray, Henry. 1918. Anatomy of the Human Body.
The third is occasionally the lowest nerve which enters the lumbar plexus, giving at the same time some fibers to the sacral plexus, and thus forming the nervus furcalis; or both the third and fourth may be furcal nerves.
The mode in which the plexus is arranged varies in different subjects.
net-work (subsartorial plexus) with branches of the saphenous and obturator nerves.
http://www.bartleby.com/107/212.html   (2858 words)

  
 Human Anatomy: Unit 3
The spinal cord ends at the level of L1 A body structure or body region that is NOT innervated by nerves arising from the sacral plexus is the:
The nerves of the brachial plexus serve the:
The muscles of the neck and diaphragm, as well as the skin of the neck, shoulder and upper breast are innervated by:
http://kcsun3.tripod.com/id165.htm   (2858 words)

  
 Solar Plexus Chakra
The Solar Plexus Chakra, situated just below the sternum, is where we find the energy to turn the desire from the Sacral Chakra into action.
This is symptomatic of a malfunction of the Solar Plexus, as is being withdrawn, fear of taking risks, over seriousness and lack of energy.
On the physical side, ulcers, diabetes and hypoglycaemia are indicative of dysfunction of the Solar Plexus Chakra.
http://www.orderofthewhitelion.com/HEALING@/Chakras@/Solarplexus.html   (231 words)

  
 Nerves
These are commonly considered as the lumbosacral plexus.
Description: Nerve roots from T12 to L4 contribute to the lumbar plexus, and those from L4 to S4, to the sacral plexus.
perineum, and the pelvic splanchnic nerves, along with branches to the int.
http://summit.stanford.edu/ourwork/PROJECTS/LUCY/lucywebsite/nerves2.html   (231 words)

  
 apdig.doc
Sacral parasympathetics to distal large intestine and further Increased parasympathetic activity increases activity to myenteric plexus INCREASES DIGESTIVE ACTIVITY Sympathetic: increased sympathetic activity: inhibits digestive activity, and excites sphincters Intramural nerve plexus (linked to ANS) Two layers of neurons from esophagus to gut: 1.
Myenteric plexus between circular & longitudinal muscle (for mobility) Mostly cholinergic: Increases activity of gut Increases peristalsis by 3-25 fold 2.
Submucosal plexus in submucosa (for glands) Plexus responsible for excitability & localized secretion of digestive juices ___________________________________________________________ ORAL CAVITY teeth reduce size of food particles receives secretions = saliva, of the salivary glands, extrinsic: 1.
http://homepages.utoledo.edu/amcafee/docs/apdig.doc   (231 words)

  
 Dissector Answers - Pelvic Neurovasculature
Identify the inferior hypogastric (pelvic) plexus and its connections to the superior hypogastric plexus (via the hypogastric nerves), sacral plexus (via pelvic splanchnic nerves), and the sacral sympathetic trunks (via the sacral sympathetic nerves).
The inferior hypogastric plexus is a major meshwork of nerves that are located on either side of the rectum, cervix, and lateral vagina in the female, or on either side of the rectum, prostate, and seminal vessicles in the male.
The puborectalis muscle is the most medial portion of the levator ani muscle.
http://anatomy.med.umich.edu/reproductive_system/pelvicwall_ans.html   (231 words)

  
 Pelvic Wall & Floor - Dissector Answers
Sacral splanchnic nerves are slender fibers leaving the anterior surface of the sacral sympathetic trunk ganglia to enter the inferior hypogastric plexus on the sides of the rectum.
The pelvic splanchnic nerves represent the sacral portion of the craniosacral outflow or parasympathetic portion of the autonomic nervous system.
The inferior hypogastric plexus is a major meshwork of nerves that are located on either side of the rectum, cervix, and lateral vagina in the female, or on either side of the rectum, prostate, and seminal vessicles in the male.
http://anatomy.med.umich.edu/pelvis/pelvicwall_ans.html   (231 words)

  
 Written Quiz - Session 4
Pressure on what nerve plexus could cause the pain in his lower limb?
Within the sacral canal, the anesthetic agent bathes the sacral spinal nerve roots which would anesthetize all of the following nerves except:
The pelvic splanchnic nerves primarily carry ____________ to the _____________ plexus
http://www.med.umich.edu/lrc/coursepages/M1/anatomy/html/quizzes/written/session20.html   (231 words)

  
 Chapter Twenty-nine: Kundalini Shakta (Yoga)
The six Cakras have been identified with the following plexuses commencing from the lowest, the Muladhara: The Sacrococcygeal plexus, the Sacral plexus, the Solar plexus (which forms the great junction of the right and left sympathetic chains Ida and Pingala with the cerebro-spinal axis.) Connected with this is the Lumbar plexus.
Thus Ajña is a center of mind, and the five lower Cakras are centers of the five Bhutas; Vishuddha of Akasha, Anahata of Vayu, Manipura of Agni, Svadhisthana of Apas, and Muladhara of Prithivi.
The six centers are the Muladhara or root-support situated at the base of the spinal column in a position midway in the perineum between the root of the genitals and the anus.
http://www.allstarz.org/religioustext/tantra/sas/sas29.htm   (231 words)

  
 Course Syllabus
nerve reflex points for the lumbar, sacral and pudendal plexus
nerve reflex points for the lumbar and sacral spine
nerve reflex points for the thoracic and brachial plexus
http://www.users.waitrose.com/~boothvrt/nerve.htm   (231 words)

  
 Medcyclopaedia - Sciatic nerve
a nerve of large diameter originating in the sacral plexus and innervating the skin of the buttocks, the external genitalia, and the back of the thigh and calf.
Malignant schwannomas sometimes occur in the region of the sciatic nerve and sacral plexus.
An entrapment neuropathy of the sciatic nerve may also occur; among its causes are Pagets disease of the ischium, prolonged squatting, immobility, fractures and dislocations of the hip, posttraumatic ossifications of the biceps femoris muscle, hip surgery and intramuscular injections.
http://www.medcyclopaedia.com/library/topics/volume_iii_1/s/SCIATIC_NERVE.aspx   (206 words)

  
 EMG & Nerve Conductions Electronic EMG Manual : Findings in certain disease entities
For the sacral plexus, the roots are stimulated with a needle electrode inserted medially and just caudally to the posterior superior iliac spine and the response recorded from the abductor hallucis.
For the lumbar plexus, the L2 to L4 nerve roots can be stimulated by using a needle electrode inserted 2-3 cm laterally to the L4 spinous process and the response recorded from the quadriceps.
In routine nerve conduction testing, we only test the median and ulnar motor response in the arm; therefore only C8 and T1 radiculopathies would be picked up unless special studies to the radial nerve or the brachial plexus are performed.
http://www.teleemg.com/new/jbr090.htm   (1248 words)

  
 VII. The Veins. 3d. The Veins of the Lower Extremity, Abdomen, and Pelvis. Gray, Henry. 1918. Anatomy of the Human Body.
It receives (a) the gluteal, internal pudendal, and obturator veins, which have their origins outside the pelvis; (b) the lateral sacral veins, which lie in front of the sacrum; and (c) the middle hemorrhoidal, vesical, uterine, and vaginal veins, which originate in venous plexuses connected with the pelvic viscera.
The pudendal plexus (plexus pudendalis; vesicoprostatic plexus) lies behind the arcuate public ligament and the lower part of the symphysis pubis, and in front of the bladder and prostate.
The left common iliac, longer than the right and more oblique in its course, is at first situated on the medial side of the corresponding artery, and then behind the right common iliac.
http://www.bartleby.com/107/173.html   (1248 words)

  
 tk13.wbc
Innervation is by inferior rectal branches of the pudendal nerve arising from the sacral plexus.
The penis and clitoris are supplied by the internal pudendal artery, but most blood from these structures is returned through the prostatic plexus (male) or vesical plexus (female) of the pelvis and not through the internal pudendal vein.
All of these changes (1-3) result from the fact that the anal canal is derived from two embryological sources the endoderm of the hindgut and the ectoderm of the proctodeum.
http://kumc.edu/research/medicine/pharmacology/CAI/webCAI/anatomy/tk13.wbc   (1248 words)

  
 ALR : techniques : Proximal sciatic nerve block - Continuous parasacral approach
The sacral plexus lies dorsally on the piriformis and ventrally on the fascia of this muscle.
Ventral collateral branches of the sacra plexus are the nerve to the obturator internus muscle, the haemorrhoidal nerve, the pudendal nerve and the pelvic organs nerves.
The pain during the puncture is less than with a posterior approach of the sciatic nerve (because of crossing muscular layers with the Labat's approach).
http://www.alrf.asso.fr/site_uk/techniques/mbrinfsciatickt.htm   (1248 words)

  
 WebLecture-Pelvis-Lec22
The obturator internus (also a lateral rotator of the thigh) is innervated by sacral nerves 1 and 2 through small branches of the sacral plexus.
The orientation and course of the obturator internus muscle is not intuitive.
When viewed from the posterior or gluteal aspect, the tendon of the obturator internus is often obfuscated by the tendons of the superior and inferior gemellus muscles (the two gemelli).
http://oac.med.jhmi.edu/weblec/templatev1/lec22.html   (1248 words)

  
 CT-guided Transgluteal Drainage of Deep Pelvic Abscesses: Indications, Technique, Procedure-related Complications, and Clinical Outcome -- Harisinghani et al. 22 (6): 1353 -- RadioGraphics
earlier, the sacral plexus lies anterior to the piriformis muscle.
Lying anterior to the piriformis muscle is the sacral
There is asymmetric enlargement of the piriformis muscle (open arrow) due to a hematoma accompanied by presacral hemorrhage (arrowhead).
http://radiographics.rsnajnls.org/cgi/content/full/22/6/1353   (1248 words)

  
 CT-guided Transgluteal Drainage of Deep Pelvic Abscesses: Indications, Technique, Procedure-related Complications, and Clinical Outcome -- Harisinghani et al. 22 (6): 1353 -- RadioGraphics
earlier, the sacral plexus lies anterior to the piriformis muscle.
Lying anterior to the piriformis muscle is the sacral
There is asymmetric enlargement of the piriformis muscle (open arrow) due to a hematoma accompanied by presacral hemorrhage (arrowhead).
http://radiographics.rsnajnls.org/cgi/content/full/22/6/1353   (5619 words)

  
 Children Harmed by Birth Trauma, and Their Parents v Negligent Medical Care Providers (birth trauma) Lawsuit Kahn Gauthier Law Group, LLC
It occurs when the baby is pulled in such a way as to stretch or tear some or all of the five nerves that emanate from the brachial plexus nerve bundle and control the shoulders, arms and hands.
These include brachial plexus injury, cerebral palsy, Group B streptococcus infection, head trauma, facial nerve trauma, spinal cord trauma, intracranial hemorrhage, bone fractures, and other injuries.
Facial Nerve Trauma: Although frequently attributed to forceps pressure, most trauma probably results from pressure on the nerve in utero, which may be due to fetal positioning or to pressure against the nerve by the sacral promontory or a uterine fibroid.
http://www.kglg.com/case/case.asp?lngCaseId=1770   (2325 words)

  
 Sciatic nerve - Wikipedia, the free encyclopedia
Arising from the lower part of the sacral plexus, the sciatic nerve enters the gluteal region by the greater sciatic foramen of the hip bone.
Spinal nerves C5-T1 (brachial plexus) --- before forming cords (dorsal scapular, long thoracic, suprascapular) --- lateral cord (musculocutaneous, median) --- posterior cord (axillary, radial) --- medial cord (median, ulnar)
Sciatic nerves from frogs and rats are often used in physiology experiments on nerve conduction because this nerve is large, and easily dissected and manipulated.
http://en.wikipedia.org/wiki/Sciatic_nerve   (332 words)

  
 NERVE - LoveToKnow Article on NERVE
The spinal nerves which are distributed - to the lower limbs first intercommunicate ~~-v,~ in the lumbar and sacral plcxuses, which, 4.~ ~ with the perineal nerves, are sometimes -.,_~~ss~i~ spoken of together as the lumbo sacral / sss~ s5ss~ \\\\ plexus.
The spinal nerves are those which arise from each side of the spinal cord and are distributed to the trunk and limbs, though some of the upper ones supply the lower parts of the head and face.
The inusculo cutaneous nerve supplies the peroneus longus and brevis muscles, and the rest of the skin of the dorsum, of the foot, and lower part of the leg, while the skin of the upper part of the dorsum of the leg, below the knee, is supplied by the external popliteal before its division.
http://66.1911encyclopedia.org/N/NE/NERVE.htm   (4960 words)

  
 MANAGEMENT OF NERVE INJURIES
The sciatic nerve arises from the sacral plexus in the pelvis (L4,L5,S1,S2,S3).
The ulnar nerve arises in the axilla from the medical cord of the brachial plexus (C7,C8,T1).
This is a clinical condition of nerve paresis or paralysis due to chronic compression of some peripheral nerves.
http://www.bonetumour.org/book/Truma/chapter26/ch26_sub2.html   (3645 words)

  
 EXTERNAL - Online Information article about EXTERNAL
The spinal nerves which are distributed to the lower limbs first intercommunicate in the lumbar and sacral plexuses, which, with the perineal nerves, are sometimes spoken of together as the lumbo sacral plexus.
The external cutaneous nerve (L.2, 3) supplies the skin of the outer side of the thigh, while the anterior crural (L.2, 3, 4) innervates the muscles on the front of the thigh, the skin on the front and inner From A. Paterson, in Cunningham's Text-Book of Anatomy.
primitive muscles have been sup-pressed, others have fused together, while others have shifted their position to a considerable distance.
http://encyclopedia.jrank.org/EUD_FAT/EXTERNAL.html   (3269 words)

  
 Obturator Internus
Nerve to the obturator internus and superior gemellus -- a branch of the sacral plexus (L5, S1)
Medial surface of greater trochanter of femur, in common with superior and inferior gemelli
Internal surface of obturator membrane and posterior bony margins of obturator foramen
http://www.rad.washington.edu/atlas2/obtinternus.html   (3269 words)

  
 Pelvic Wall & Floor - Dissector Answers
Demonstrate the formation of the sacral plexus, its relationship to the piriformis muscle and gluteal vessels, and its pelvic splanchnic and pudendal nerve branches.
The puborectalis muscle is the most medial portion of the levator ani muscle.
between the gluteus medius muscle and the gluteus minimus muscle
http://www.med.umich.edu/lrc/coursepages/M1/anatomy/html/pelvis/pelvicwall_ans.html   (2520 words)

  
 Various Approaches for CT-guided Percutaneous Biopsy of Deep Pelvic Lesions: Anatomic and Technical Considerations -- Gupta et al. 24 (1): 175 -- RadioGraphics
gluteal vessels, and branches of the sacral plexus.
The gluteal muscles lie posterior to the innominate bones.
sciatic foramen anterior and cephalad to the piriform muscle.
http://radiographics.rsnajnls.org/cgi/content/full/24/1/175   (7675 words)

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