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Encyclopedia > Sacral plexus

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. Anatomical drawing of the human muscles from the Encyclopédie. ...    Nerves redirects here. ... PLEXUS (Physics Learning EXperience Using Software) is a name of project that was started by Vibor Cipan, physics student form Croatia and it is based on utilization of usage of computer technology to enhance learning of physics. ... Sacrum, pelvic surface The sacrum (os sacrum) is a large, triangular bone at the base of the vertebral column and at the upper and back part of the pelvic cavity, where it is inserted like a wedge between the two hip bones. ... A diagram of a thoracic vertebra. ... Human male pelvis, viewed from front Human female pelvis, viewed from front The pelvis is the bony structure located at the base of the spine (properly known as the caudal end). ...


The phrase "Lumbar sacral plexus" is also sometimes used, and in this context it refers to the nerves emerging from L4-S4.


Nerves emerging from the sacral plexus include:

The sciatic nerve is a large nerve that runs down the lower limb. ... The Common peroneal nerve is a branch of the Sciatic nerve. ... The Tibial Nerve The tibial nerve passes through the popliteal fossa to pass below the arch of soleus. ... The pudendal nerve is responsible for orgasm, urination, and defecation in both sexes. ...

See also

PLEXUS (Physics Learning EXperience Using Software) is a name of project that was started by Vibor Cipan, physics student form Croatia and it is based on utilization of usage of computer technology to enhance learning of physics. ...

External links

Major nerves (also see Peripheral nervous system)

Cranial nerves: I olfactory | II optic | III oculomotor | IV trochlear | V trigeminal (V1 ophthalmic - supraorbital, V2 maxillary - sphenopalatine ganglion, V3 mandibular - auriculotemporal - buccal - inferior alveolar ) | VI abducens | VII facial | VIII vestibulocochlear (cochlear, vestibular) | IX glossopharyngeal | X vagus (recurrent laryngeal) | XI accessory | XII hypoglossal    Nerves redirects here. ... The peripheral nervous system or PNS, is part of the nervous system, and consists of the nerves and neurons that reside or extend outside the central nervous system--to serve the limbs and organs, for example. ... Cranial nerves are nerves which emerge from the brainstem instead of the spinal cord. ... The olfactory nerve is the first of twelve cranial nerves. ... The optic nerve is the nerve that transmits visual information from the retina to the brain. ... The oculomotor nerve () is the third of twelve paired cranial nerves. ... The fourth of twelve cranial nerves, the trochlear nerve controls the function of the superior oblique muscle, which rotates the eye towards the nose and also moves the eye downward. ... The trigeminal nerve is the fifth (V) cranial nerve, and carries sensory information from most of the face, as well as motor supply to the muscles of mastication (the muscles enabling chewing), tensor tympani (in the middle ear) and other muscles in the floor of the mouth, such as the... The supraorbital nerve arises from the orbit by the supraorbital foramen and supplies the upper eyelid and forehead integuments. ... The mandibular nerve is the third branch (V3) of the trigeminal nerve. ... The auriculotemporal nerve is a branch of the mandibular nerve (Viii) and supplies motor fibres to the temporomandibular joint and parasympathetic fibres to the parotid glands. ... A branch of the mandibular nerve (which is itself a branch of the trigeminal nerve), the buccal nerve transmits sensory information from skin over the buccal membrane (in general, the cheek) and from the second and third molar teeth. ... The inferior alveolar nerve is a branch of the mandibular nerve, which is itself the third branch (V3) of the fifth cranial nerve, the trigeminal nerve (cranial nerve V). ... The sixth out of twelve cranial nerves, the abducens nerve controls the lateral rectus muscle - this means that the action of this nerve controls each eyes ability to look laterally (away from the midline). ... The facial nerve is seventh of twelve paired cranial nerves. ... The vestibulocochlear nerve is the eighth of twelve cranial nerves, and also known as the auditory nerve. ... The Cochlear nerve (n. ... The glossopharyngeal nerve is the ninth of twelve cranial nerves. ... The vagus nerve is tenth of twelve paired cranial nerves and is the only nerve that starts in the brainstem (somewhere in the medulla oblongata) and extends all the way down past the head, right down to the abdomen. ... The recurrent laryngeal nerve is a branch of the vagus nerve (the tenth cranial nerve) which supplies motor function and sensation to the larynx (voice box). ... The accessory nerve is the eleventh of twelve cranial nerves. ... The hypoglossal nerve is the twelfth cranial nerve. ...


Spinal nerves C2-C5: greater occipital, lesser occipital, greater auricular, lesser auricular, phrenic The term spinal nerve generally refers to the mixed spinal nerve, which is formed from the dorsal and ventral roots that come out of the spinal cord. ... The greater occipital nerve is a spinal nerve arising between the first and second cervical vertebrae, along with the lesser occipital nerve. ... The lesser occipital nerve is a spinal nerve arising between the first and second cervical vertebrae, along with the greater occipital nerve. ... The greater auricular nerve originates from the cervical plexus, composed of branches of spinal nerves C2 and C3. ... The lesser auricular nerve originates from the cervical plexus, composed of branches of spinal nerves C2 and C3. ... The phrenic nerve arises from spinal nerves C3, C4 and C5. ...


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) The term spinal nerve generally refers to the mixed spinal nerve, which is formed from the dorsal and ventral roots that come out of the spinal cord. ... The brachial plexus is an arrangement of nerve fibres (a plexus) running from the spine (vertebrae C5-T1), through the neck, the axilla (armpit region), and into the arm. ... The dorsal scapular nerve arises from the brachial plexus, specifically from spinal nerves C4 and C5. ... The long thoracic nerve supplies motor innervation to the serratus anterior muscle. ... The Nervus suprascapularis (Suprascapular nerve) is a nerve of the plexus brachialis. ... The Lateral cord is a division of the brachial plexus. ... The major end branch of the lateral cord, courses inferiorly within the anterior arm, supplying motor fibers to the arm muscles that flex the forearm (the biceps brachii and brachialis). ... Diagram from Grays anatomy, depicting the peripheral nerves of the upper extremity, amongst others the median nerve The median nerve is a nerve that runs down the arm and forearm. ... The Posterior cord is a division of the brachial plexus. ... The axillary nerve is a nerve of the human body, that comes off the posterior cord of the brachial plexus at the level of the axilla (armpit). ... The radial nerve is a nerve in the human body, that supplies the arm, the forearm and the hand. ... The Medial cord is a division of the brachial plexus. ... Diagram from Grays anatomy, depicting the peripheral nerves of the upper extremity, amongst others the median nerve The median nerve is a nerve that runs down the arm and forearm. ... The ulnar nerve is a nerve that in humans runs down the arm and forearm, and into the hand. ...


Spinal nerves T2-S5: intercostal | sacral plexus | sciatic (tibial, common peroneal) | pudendal The term spinal nerve generally refers to the mixed spinal nerve, which is formed from the dorsal and ventral roots that come out of the spinal cord. ... The thoracic spinal nerves T3 through T12. ... The sciatic nerve is a large nerve that runs down the lower limb. ... The Tibial Nerve The tibial nerve passes through the popliteal fossa to pass below the arch of soleus. ... The Common peroneal nerve is a branch of the Sciatic nerve. ... The pudendal nerve is responsible for orgasm, urination, and defecation in both sexes. ...


  Results from FactBites:
 
IX. Neurology. 6e. The Sacral and Coccygeal Nerves. Gray, Henry. 1918. Anatomy of the Human Body. (3934 words)
The nerves forming the sacral plexus converge toward the lower part of the greater sciatic foramen, and unite to form a flattened band, from the anterior and posterior surfaces of which several branches arise.
In the upper part of its course the nerve rests upon the posterior surface of the ischium, the nerve to the Quadratus femoris, the Obturator internus and Gemelli, and the Quadratus femoris; it is accompanied by the posterior femoral cutaneous nerve and the inferior gluteal artery, and is covered by the Glutæus maximus.
It lies on the posterior wall of the pelvis, and is usually formed by branches from the anterior divisions of the second and third sacral nerves, the whole of the anterior divisions of the fourth and fifth sacral nerves, and the coccygeal nerve.
Early American Manual Therapy (9500 words)
The explanation is that the uterus by dragging or pressing on the sacral spinal nerves, induces pain in the lumbo-sacral regions and the pain is reflected from the lumbar cord along the ilio-hypogastric, ilio-inguinal, and genito-crural nerves, branches of the lumbar plexus to the hypogastric and inguinal region.
Irritation of the sacral nerves is liable to be reflected from the common lumbar trunk to the branches of the hypoastric and inguinal region.
The nerves in relation are the lumbar plexus, anterior and posterior, the hypogastric plexus connected to the lumbar plexus by the rami communicantes, and the sacral plexus.
  More results at FactBites »

 
 

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