单词 | cranial nerve |
例句 | A month earlier, after giving birth to twins, I’d been diagnosed with Bell’s palsy, a paralysis of the seventh cranial nerve. An Acclaimed Playwright on Masks and the Return to the Stage 2021-10-04T04:00:00Z That created for him physical disabilities—cranial nerves were messed with. Rob Delaney on Writing While Grieving and the Real Work of Comedy 2019-10-20T04:00:00Z The vagus nerve is the longest of the cranial nerves, which emerge directly from the brain rather than traveling through the spinal cord. What Is Vagus Nerve Stimulation For? 2023-07-04T04:00:00Z The nerves involved are cranial nerves and spinal nerves. Fundamentals of Biology 2015-01-01T00:00:00Z “That system is modulated in the brain by cranial nerves rooted in the brainstem, and adjacent cranial nerves affect your ability to acquire speech and language.” WSU study finds new test to screen children for autism 2022-08-25T04:00:00Z Figure 26.28 The human brain contains 12 cranial nerves that receive sensory input and control motor output for the head and neck. Biology for AP Courses 2022-06-09T00:00:00Z The roots of cranial nerves are within the cranium, whereas the ganglia are outside the skull. Anatomy and Physiology 2013-06-19T00:00:00Z For those reasons, the vagus nerve — the longest of the 12 cranial nerves — is sometimes referred to as an “information superhighway.” This Nerve Influences Nearly Every Internal Organ. Can It Improve Our Mental State, Too? 2022-06-02T04:00:00Z It focuses on six main components: The central nervous system, the cranial nerves the Brachial plexus, the thoracoabdominal nerves, the Lumbar plexus, and the sacral plexus. Fundamentals of Biology 2015-01-01T00:00:00Z I don’t drive because treatment for a brain tumor caused swelling that impacted my cranial nerves, corrupting my balance, motor skills, and causing my eyes to bounce. Electric vehicles are the future for everyone — except disabled people 2021-07-02T04:00:00Z It is the vestibular branch of the vestibulocochlear cranial nerve that deals with balance. Biology for AP Courses 2022-06-09T00:00:00Z The neurons of cranial nerve ganglia are also unipolar in shape with associated satellite cells. Anatomy and Physiology 2013-06-19T00:00:00Z This quick coordinated action between the brain, cranial nerves and kidneys is far more efficient and precise than any phone app, gadget or personalized recommendation available. Perspective | Drinking 8 glasses of water a day usually isn’t necessary, an exercise scientist says 2021-04-30T04:00:00Z The PNS is a vast network of spinal and cranial nerves that are linked to the brain and the spinal cord. Fundamentals of Biology 2015-01-01T00:00:00Z I am unsure but am guessing that the cranial nerve responsible for taste and smell may not be affected by coronavirus. What it feels like to survive COVID-19’s dreaded “cytokine storm” 2020-04-05T04:00:00Z Each cranial nerve is accorded a name, which are detailed in Figure 26.28. Biology for AP Courses 2022-06-09T00:00:00Z Another group of autonomic ganglia are the terminal ganglia that receive input from cranial nerves or sacral spinal nerves and are responsible for regulating the parasympathetic aspect of homeostatic mechanisms. Anatomy and Physiology 2013-06-19T00:00:00Z Unlike the cells in taste buds, intestinal cells aren’t wired to cranial nerves that transmit sensory information. Great news! Hops contain a molecule that improves metabolism 2019-03-03T05:00:00Z The cranial nerves are located below the brain and includes the vagus, which parallels the spinal cord. Fundamentals of Biology 2015-01-01T00:00:00Z Garrett died 6 July of a rare cancer that attacked his temporal bone and cranial nerve. Terminally ill boy, five, writes own obituary: 'See ya later, suckas!' 2018-07-13T04:00:00Z Other cranial nerves transmit almost solely motor information. Biology for AP Courses 2022-06-09T00:00:00Z Nerves are associated with the region of the CNS to which they are connected, either as cranial nerves connected to the brain or spinal nerves connected to the spinal cord. Anatomy and Physiology 2013-06-19T00:00:00Z Garrett, of Van Meter, Iowa, died July 6 of a rare cancer that attacked his temporal bone and cranial nerve. Obit, memorial service of 5-year-old Iowa boy gets attention 2018-07-13T04:00:00Z The eighth cranial nerve comes from the brain stem to enter the inner ear. Fundamentals of Biology 2015-01-01T00:00:00Z Perhaps the most poignant moment of anatomy lab is the moment we expose the cranial nerves. A Meditation on the Anatomy Lab 2018-01-23T05:00:00Z Other cranial nerves contain a mix of sensory and motor fibers. Biology for AP Courses 2022-06-09T00:00:00Z Learning the cranial nerves is a tradition in anatomy courses, and students have always used mnemonic devices to remember the nerve names. Anatomy and Physiology 2013-06-19T00:00:00Z The doctor said it was trauma to the seventh cranial nerve, causing facial muscles to weaken — as happens with Bell’s palsy. My Deaf Son Fought Speech. Sign Language Let Him Bloom 2017-05-26T04:00:00Z Information from these cranial nerves is processed by the gustatory system. Fundamentals of Biology 2015-01-01T00:00:00Z Bell’s palsy is a viral infection that causes damage to the seventh cranial nerve. How an auctioneer who struggled to talk became a champion 2016-08-18T04:00:00Z Warmth and cold information from the face travels through one of the cranial nerves to the brain. Biology for AP Courses 2022-06-09T00:00:00Z The twelve cranial nerves can be strictly sensory in function, strictly motor in function, or a combination of the two functions. Anatomy and Physiology 2013-06-19T00:00:00Z I was born with Moebius syndrome — a rare form of facial paralysis that results from damage in the womb to the sixth and seventh cranial nerves, which control the muscles of the face. Pretty Girls Are Supposed to Smile 2016-08-08T04:00:00Z The hair cells then stimulate the nerve cells in the Spiral Ganglion, which sends information through the auditory portion of the eighth cranial nerve to the brain. Fundamentals of Biology 2015-01-01T00:00:00Z Fourth cranial nerve palsy causes weakness or paralysis to the superior oblique muscle. Angels 2B Giavotella out indefinitely 2015-09-04T04:00:00Z The cochlear branch of the vestibulocochlear cranial nerve sends information on hearing. Biology for AP Courses 2022-06-09T00:00:00Z Testing for neurological function involves a series of tests of functions associated with the cranial nerves. Anatomy and Physiology 2013-06-19T00:00:00Z The first chapter dealt with the brain and the cranial nerves. Attack of the Student Hairdressers 2015-02-28T05:00:00Z The neurosurgeon suspected she had glossopharyngeal neuralgia, a condition caused by irritation of the ninth cranial nerve, which carries sensations from the throat to the brain. The professor without a voice 2015-02-23T05:00:00Z She told me that it was a common, temporary paralysis brought on by the inflammation of the seventh cranial nerve, which activates the facial muscles. The Last Time I Smiled 2015-01-05T05:00:00Z I chose the latter, and for the next 12 minutes, they applied specifically calibrated levels of electricity to target my cranial nerves. Thync Lets You Give Your Mind a Jolt 2014-10-08T04:00:00Z The twelve cranial nerves are typically covered in introductory anatomy courses, and memorizing their names is facilitated by numerous mnemonics developed by students over the years of this practice. Anatomy and Physiology 2013-06-19T00:00:00Z Only four were confirmed to have enterovirus 68, but doctors found abnormalities in all nine children’s spinal fluid and their cranial nerves. First Reported Death From Enterovirus Pinto explained that the olfactory nerve, which carries scent information to the brain, is the only one of the cranial nerves that is directly exposed to the environment. Could a Fading Sense of Smell Point to Earlier Death? 2014-10-01T04:00:00Z The inflammation had disturbed the eighth cranial nerve, which regulates the inner ear. The Last Time I Smiled 2015-01-05T05:00:00Z That’s the longest cranial nerve in your body, starting at your brain stem and extending as far down as your diaphragm to control the stomach. 10 Home Remedies You Can Find in Your Kitchen 2014-07-20T04:00:00Z The cranial nerve exam allows directed tests of forebrain and brain stem structures. Anatomy and Physiology 2013-06-19T00:00:00Z The ability to smell is associated with the first cranial nerve, and is often one of the first things to be affected by cognitive decline. Could a Simple Smell Test Help Spot Alzheimer's Early? 2014-07-14T04:00:00Z A: It reflects the functioning of what’s called the vagus nerve, the 10th cranial nerve. Love may not be as elusive as some think, research says 2013-03-27T22:47:16Z It and the seventh cranial nerve pass through a pair of tiny canals, one on each side of the skull. The Last Time I Smiled 2015-01-05T05:00:00Z Marcolini developed a so-called neurinoma affecting a cranial nerve, which was apparently not cancerous but nevertheless required surgery that badly affected his quality of life. Italy court ruling links mobile phone use to tumor 2012-10-19T15:18:44Z The movement of the eyes, face, tongue, throat, and neck are all under the control of cranial nerves. Anatomy and Physiology 2013-06-19T00:00:00Z Her condition was diagnosed as atypical trigeminal neuralgia, a rare disorder of a cranial nerve. Artists’ Rescue Funds Can Help in Times of Crisis 2012-06-02T15:36:48Z T. F. Hoffmann cites a severe case, that ultimately recovered, with consecutive paralysis of certain cranial nerves. A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases 2012-03-17T02:00:54.097Z The eighth cranial nerve didn’t heal, but with effort the eyes can be trained to take over the work of the inner ear, providing information about balance to the brain. The Last Time I Smiled 2015-01-05T05:00:00Z But yoga might be able to help, in part by stimulating the cranial nerve and an important neurotransmitter called GABA. How Yoga Might Relieve Stress-Linked Ailments 2012-03-13T23:45:00.403Z Several cranial nerves from the brain exit the skull via this opening. Anatomy and Physiology 2013-06-19T00:00:00Z Investigations continue into a possible pheromone nerve, known as cranial nerve 0, or the terminal nerve. Do Pheromones Play a Role in Our Sex Lives? 2012-02-13T18:45:00.233Z In the greater number of instances, so far as my experience goes, it is the fifth cranial nerve which becomes neuralgic from the effects of central shock. Neuralgia and the Diseases that Resemble it 2011-10-03T02:00:31.460Z The seventh cranial nerve was able to heal, but only in part. The Last Time I Smiled 2015-01-05T05:00:00Z Bell’s palsy, which affects perhaps 40,000 Americans a year, is characterized by acute inflammation or trauma to the seventh cranial nerve, disabling the muscles of one side of the face. ?You are either having a stroke or you have Bells palsy? 2011-09-30T21:05:34Z Another important aspect of the cranial nerves that lends itself to a mnemonic is the functional role each nerve plays. Anatomy and Physiology 2013-06-19T00:00:00Z Any pathological change which leads to an interference in the accommodating power of one eye alone must have its origin in a lesion which lies peripherally to the nucleus of the third cranial nerve. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z The tongue does not tire easily, they said, and it is not usually affected by a spinal-cord injury because it is directly connected to the brain through a cranial nerve. He steers his wheelchair with a tongue stud 2011-06-11T01:26:10Z The tongue does not tire easily, they said, and it is not usually affected by a spinal cord injury because it is directly connected to the brain through a cranial nerve. Piercing a Tongue, in the Name of Mobility 2011-06-06T20:21:43Z The membrane of the nose concerned in smell is supplied by the first pair of cranial nerves, the so-called olfactory nerves. Makers of Modern Medicine 2011-03-05T03:00:29.580Z The arrangement of these nerves is much more regular than that of the cranial nerves. Anatomy and Physiology 2013-06-19T00:00:00Z Of all these muscles the superior oblique is supplied by the fourth cranial nerve, the external rectus by the sixth and the rest by the third. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z The optic nerve, indeed, is morphologically the first cranial nerve, the olfactory being the second; both are attached to what is morphologically the dorsal side of the nerve tube. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z From the base of the brain, and from the sides of the medulla originate, also, the cranial nerves, of which there are twelve pairs. A Treatise on Physiology and Hygiene For Educational Institutions and General Readers Morgagni pointed out that the mucous membrane of the nose is partly supplied also from the fifth pair of cranial nerves. Makers of Modern Medicine 2011-03-05T03:00:29.580Z The cranial nerves can be strictly sensory fibers, such as the olfactory, optic, and vestibulocochlear nerves, or mixed sensory and motor nerves, such as the trigeminal, facial, glossopharyngeal, and vagus nerves. Anatomy and Physiology 2013-06-19T00:00:00Z It is analogous to peripheral inflammation of other nerves, such as the third, fourth, sixth and seventh cranial nerves. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z This grey matter forms collections of nerve cells, which are the centres of origin of several cranial nerves. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" One more fact remains to be observed in this connection, namely, this crossed action does not usually take place in the cranial nerves. A Treatise on Physiology and Hygiene For Educational Institutions and General Readers Among the symptoms denoting paresis of motor-centres of cranial nerves, together with sympathetic ganglia, the first and most noteworthy is the early dilatation of the pupil. On Snake-Poison: its Action and its Antidote Sensory information from the periphery, which enters through spinal or cranial nerves, is copied to a nucleus in the medulla known as the inferior olive. Anatomy and Physiology 2013-06-19T00:00:00Z The under surface, or base, of the brain and origin of the cranial nerves. A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) At the base of the brain the pia mater is prolonged on to the roots of the cranial nerves. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" The face, however, is supplied by the sensory cranial nerves. A Treatise on Physiology and Hygiene For Educational Institutions and General Readers During the progress of the symptoms there is frequently evidence of direct pressure upon definite cortical centres or cranial nerves, giving rise to focal symptoms. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. Another type of sensory ganglion is a cranial nerve ganglion. Anatomy and Physiology 2013-06-19T00:00:00Z The base of the skull and the openings through which the cranial nerves pass. A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) The floor of the fourth ventricle is of special interest because a little way from the surface are the deep origins of all the cranial nerves from the fifth to the twelfth. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" The optic nerve, also called the "second pair" of cranial nerves, is the means of communication between the eye and the brain. A Treatise on Physiology and Hygiene For Educational Institutions and General Readers The rapidly fatal issue of these cases usually prevents the manifestation of any injury to the posterior cranial nerves. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. This is analogous to the dorsal root ganglion, except that it is associated with a cranial nerve instead of a spinal nerve. Anatomy and Physiology 2013-06-19T00:00:00Z A vertical section of the cerebrum, cerebellum, and medulla oblongata, showing the relation of the cranial nerves at their origin. A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) The reason why the basal lamina is here small is because it contains the nuclei of no cranial nerves. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" The nerves which arise from the brain are called cranial nerves. A Treatise on Physiology and Hygiene For Educational Institutions and General Readers Recovery may be attended with paralysis of one or other of the cranial nerves. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. Figure 13.23 The Cranial Nerves The anatomical arrangement of the roots of the cranial nerves observed from an inferior view of the brain. Anatomy and Physiology 2013-06-19T00:00:00Z If the cranial nerves which are connected 349 by a single root are divided, only the sensation of the part to which they are distributed is lost. A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) In the basal laminae are found the deep origins of most of the motor cranial nerves, while those of the sensory are situated in the alar laminae. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" This is a branch of the great cranial nerve, called the "fifth pair," which ramifies in all parts of the face. A Treatise on Physiology and Hygiene For Educational Institutions and General Readers Finally, paralysis of the cranial nerves may result from pressure of blood-clot, or from the nerves being torn without the skull being fractured. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. Three of the cranial nerves also contain autonomic fibers, and a fourth is almost purely a component of the autonomic system. Anatomy and Physiology 2013-06-19T00:00:00Z These are the first, second, eighth, and it may be one of the branches of the fifth pair of cranial nerves. A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) The first, second, third, and fourth cranial nerves of the frog correspond with those of the rabbit in origin and distribution. Text Book of Biology, Part 1: Vertebrata One of the cranial nerves; it is the special nerve of hearing. A Treatise on Physiology and Hygiene For Educational Institutions and General Readers Irritation, or paralysis, of one or more of the cranial nerves may result from lesions implicating their centres or trunks. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. These new axons grow along the axons that are already in place in the cranial nerve. Anatomy and Physiology 2013-06-19T00:00:00Z These embrace the fifth pair of cranial nerves, and the thirty-one pairs of spinal nerves. A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) The nerves which emerge from the vertebral column between the vertebrae, arise, unlike the cranial nerves, by two roots. Text Book of Biology, Part 1: Vertebrata Remaining cranial nerves.—I have little to say regarding the third, fourth, and sixth nerves. Surgical Experiences in South Africa, 1899-1900 Being Mainly a Clinical Study of the Nature and Effects of Injuries Produced by Bullets of Small Calibre A small abscess in this lobe may produce no localising symptoms; one of large size may press indirectly on the motor cortex, on the fibres passing through the internal capsule, or on individual cranial nerves. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. The motor nuclei of these cranial nerves connect to the brain stem, which coordinates eye movements. Anatomy and Physiology 2013-06-19T00:00:00Z These are the third, sixth, and twelfth pairs of cranial nerves, and the thirty-one pairs of spinal nerves. A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) From the fore-brain spring two pairs, which differ from the rest of the cranial nerves in being, first of all, hollow outgrowths of the brain-- the others are from the beginning solid. Text Book of Biology, Part 1: Vertebrata Unlike the spinal nerves, the cranial nerves present great variety among themselves, scarcely any two of them being alike in function or in their connection with different parts of the body. Physiology and Hygiene for Secondary Schools Throughout this part of its course, numerous axons leave the tract, and enter the mid-brain, pons, and medulla in which lie the nuclei of the motor cranial nerves. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. Whereas spinal information is contralateral, cranial nerve systems are mostly ipsilateral, meaning that a cranial nerve on the right side of the head is connected to the right side of the brain. Anatomy and Physiology 2013-06-19T00:00:00Z Give the anatomy of the brain and cranial nerves. A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) Proceeding from the brain are twelve pairs of cranial nerves. Text Book of Biology, Part 1: Vertebrata They have the widest distribution of any of the cranial nerves. Physiology and Hygiene for Secondary Schools The cerebral tissue is greatly thinned out, but the cerebellum and cranial nerves usually remain unaffected. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. Some cranial nerves contain only sensory axons, such as the olfactory, optic, and vestibulocochlear nerves. Anatomy and Physiology 2013-06-19T00:00:00Z The cranial nerves, with the exception of the olfactory, optic, and auditory, connect with each other by means of filaments. A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) The cranial nerves may be pressed upon at the base, especially at their points of exit, and this gives rise to symptoms of irritation or paralysis in the area of distribution of the nerves affected. Manual of Surgery Volume First: General Surgery. Sixth Edition. Note the connection of the cranial nerves with the under side. Physiology and Hygiene for Secondary Schools Abducens Nerve.—This nerve, which supplies the lateral rectus muscle, has the longest course within the skull of any of the cranial nerves. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. Then there is the cranial nerve exam, which tests the function of the 12 cranial nerves and, therefore, the central and peripheral structures associated with them. Anatomy and Physiology 2013-06-19T00:00:00Z Give the 1st observation relative to the cranial nerves. 2d. A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) Other cranial nerves, particularly the oculomotor and the hypoglossal, may also be implicated. Manual of Surgery Volume First: General Surgery. Sixth Edition. Causes an acute viral infection—inflammation of the sensory ganglia of spinal or cranial nerves and the eruption of vesicles along the affected nerve path. Mother's Remedies Over One Thousand Tried and Tested Remedies from Mothers of the United States and Canada Any of the other cranial nerves from the fifth to the twelfth may be either irritated or paralysed. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. The cranial nerve exam tests the sensory and motor functions of each of the nerves, as applicable. Anatomy and Physiology 2013-06-19T00:00:00Z These are the fourth, seventh, ninth, tenth, and eleventh pair of cranial nerves, also the phrenic and the external respiratory nerve. A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) The olfactory nerves are the first pair of cranial nerves. Composition-Rhetoric At the postmortem more than a thousand tumors were found affecting not only the peripheral branches and the sympathetic, but also the cranial nerves and the pneumogastric. Anomalies and Curiosities of Medicine Basal fractures are frequently associated with contusion and laceration of the brain, and also with injuries of one or more of the cranial nerves. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. This is the point of exit for the cranial nerve that supplies the facial muscles. Anatomy and Physiology 2013-06-19T00:00:00Z It includes all the hindbrain except the cerebellum and pons, and from it a large part of the cranial nerves arise. The Gutenberg Webster's Unabridged Dictionary Section M, N, and O It has in it certain cell centres that give origin to six of the cranial nerves. Common Diseases of Farm Animals There was profound coma for ten days and paralysis of the 1st, 2d, 3d, 4th, 6th, and 7th cranial nerves, particularly affecting the left side of the face. Anomalies and Curiosities of Medicine It is also in part the deep origin of many of the 'important cranial nerves. A Practical Physiology It controls the head and neck region of the body through the cranial nerves. Anatomy and Physiology 2013-06-19T00:00:00Z What exception in the seventh pair of cranial nerves? Hygienic Physiology : with Special Reference to the Use of Alcoholic Drinks and Narcotics It seemed also as though the cranial nerves were partially paralyzed. The Film Mystery Yes, the vagus or wandering nerve, the so-called tenth cranial nerve. The War Terror The cranial nerves are of three kinds: sensory, motor, and both combined, viz., mixed. A Practical Physiology Sensory ganglia contain unipolar sensory neurons and are found on the dorsal root of all spinal nerves as well as associated with many of the cranial nerves. Anatomy and Physiology 2013-06-19T00:00:00Z Bell himself, meanwhile, had turned his attention to the cranial nerves, and had proved that these also are divisible into two sets—sensory and motor. A History of Science — Volume 4 In fact, the cranial nerves, by detailed examination, are intact, except in so far as respiration and speech are concerned. The Journal of Abnormal Psychology, Volume 10 The cranial nerves connect the head and neck directly to the brain, but the spinal cord receives sensory input and sends motor commands out to the body through the spinal nerves. Anatomy and Physiology 2013-06-19T00:00:00Z The tenth pair, the pneumogastric, also known as the vagus or wandering nerves, are the longest and most complex of all the cranial nerves. A Practical Physiology Nerves are classified as cranial nerves or spinal nerves on the basis of their connection to the brain or spinal cord, respectively. Anatomy and Physiology 2013-06-19T00:00:00Z The cranial nerve exam tests the functions of all of the cranial nerves and, therefore, their connections to the CNS through the forebrain and brain stem. Anatomy and Physiology 2013-06-19T00:00:00Z The output from the cortex causes activity in motor neurons in the brain stem that cause movement of the extraocular muscles through the third, fourth, and sixth cranial nerves. Anatomy and Physiology 2013-06-19T00:00:00Z Neurotransmitters from the gustatory cells can activate sensory neurons in the facial, glossopharyngeal, and vagus cranial nerves. Anatomy and Physiology 2013-06-19T00:00:00Z The influence thus especially connected with the processes of organic life is generally different from, or even opposed to, that conveyed to the same organs by fibers running in the spinal or cranial nerves. A Practical Physiology The sensory pathway for gustation travels along the facial and glossopharyngeal cranial nerves, which synapse with neurons of the solitary nucleus in the brain stem. Anatomy and Physiology 2013-06-19T00:00:00Z These neurons are part of the facial and glossopharyngeal cranial nerves, as well as a component within the vagus nerve dedicated to the gag reflex. Anatomy and Physiology 2013-06-19T00:00:00Z To assist the visual system, fibers of the vestibular nuclei project to the oculomotor, trochlear, and abducens nuclei to influence signals sent along the cranial nerves. Anatomy and Physiology 2013-06-19T00:00:00Z The nerves that convey sensory information from the periphery to the CNS are either spinal nerves, connected to the spinal cord, or cranial nerves, connected to the brain. Anatomy and Physiology 2013-06-19T00:00:00Z The tongue is supplied with sensory fibers by branches from the fifth and eighth pairs of cranial nerves. A Practical Physiology Figure 14.21 Vestibulo-ocular Reflex Connections between the vestibular system and the cranial nerves controlling eye movement keep the eyes centered on a visual stimulus, even though the head is moving. Anatomy and Physiology 2013-06-19T00:00:00Z The cranial nerves are connected to the same side of the brain from which the sensory information originates. Anatomy and Physiology 2013-06-19T00:00:00Z The short axons of the first cranial nerve regenerate on a regular basis. Anatomy and Physiology 2013-06-19T00:00:00Z There were no specific tests of the cranial nerves. Anatomy and Physiology 2013-06-19T00:00:00Z The nerves which supply the nasal mucous membrane are derived from the branches of the fifth and the first pair of cranial nerves,--the olfactory. A Practical Physiology The connections of the optic nerve are more complicated than those of other cranial nerves. Anatomy and Physiology 2013-06-19T00:00:00Z The nerves can be categorized by functions, and subtests of the cranial nerve exam can clarify these functional groupings. Anatomy and Physiology 2013-06-19T00:00:00Z The twelve cranial nerves serve the head and neck. Anatomy and Physiology 2013-06-19T00:00:00Z The special senses are served through the cranial nerves, as well as the general senses of the head and neck. Anatomy and Physiology 2013-06-19T00:00:00Z At the upper end the chain of each side passes up into the cranium and is closely connected with the cranial nerves. A Practical Physiology The preganglionic parasympathetic fibers within cranial nerve III terminate in the ciliary ganglion, which is located in the posterior orbit. Anatomy and Physiology 2013-06-19T00:00:00Z |
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