| 单词 | nerve fibre |
| 例句 | Mitra agrees that, for some women, this can be helpful, due to neurotransmitters that seem to distract nerve fibres involved in period pain. Five ways to cope with menstrual cramps 2019-06-16T04:00:00Z MS, which affects about 100,000 people in the UK, occurs when the immune system attacks the protective myelin sheath that surrounds nerve fibres and acts as an insulator. Lack of vitamin D may cause multiple sclerosis, study finds 2015-08-25T04:00:00Z Brothers Michael and Matthew Clark both suffer from a rare form of leukodystrophy, a genetic disorder that attacks the myelin sheath covering the nerve fibres of the brain. TV review: The Curious Case of the Clark Brothers; Dying for Clear Skin 2012-11-26T22:00:01Z “This nerve fibre is responsible for so many aspects of our wellbeing across our lifespan. I call it the Higgs boson of the social brain. The missing particle that glues everything social together.” No hugging: are we living through a crisis of touch? 2018-03-07T05:00:00Z MS occurs when the protective layer surrounding nerve fibres - myelin - becomes damaged and stops messages flowing between the brain and body. Livvy Haydock: 'Disabled gangsters supported me with my MS diagnosis' 2023-04-25T04:00:00Z A study has now linked APOE4 with faulty cholesterol processing in the brain, which in turn leads to defects in the insulating sheaths that surround nerve fibres and facilitate their electrical activity. This Is How an Alzheimer’s Gene Ravages the Brain 2022-11-18T05:00:00Z Every week that passes where they are untreated, risks further damage to the nerve fibres and can make the difference between a child being able to walk or run or sit unaided. 'Gene therapy is a game changer for our son' 2021-05-31T04:00:00Z “Everywhere I look at changes of behaviour during the pandemic, this little flag is flying, this nerve fibre – touch, touch, touch!” Has a year of living with Covid-19 rewired our brains? 2020-12-13T05:00:00Z Brain scans showed an unmistakable imaging pattern: profound, bilateral damage to the white matter, the bundles of nerve fibres that facilitate communication between different regions of the brain. 'Is anybody in there?' Life on the inside as a locked-in patient 2020-11-26T05:00:00Z And Dussor points out that tension headaches might be associated with tightening muscles in the neck and head, which can affect the surrounding sensory nerve fibres and release CGRP. A new generation of headache drugs 2020-10-13T04:00:00Z This interferes with the cells’ ability to cover nerve fibres in a protective wrapper made of a lipid-rich material called myelin. This Is How an Alzheimer’s Gene Ravages the Brain 2022-11-18T05:00:00Z In nerve fibres, this would lower the threshold for conveying a painful signal, says Zeberg. Neanderthal gene linked to increased pain sensitivity 2020-07-22T04:00:00Z These wires mimic the nerve fibres that connect the human eye to the brain. Artificial eye boosted by hemispherical retina 2020-05-19T04:00:00Z The condition is almost always caused by neuropathy, an interruption in the transmission of painful sensation along nerve fibres. A World Without Pain 2020-01-06T05:00:00Z MS affects a substance called myelin which is a fatty sheath found around nerve fibres. The teenager who laughed in the face of MS 2019-12-17T05:00:00Z Connecting Broca’s area with Wernicke’s is a neural network: a thick, curving bundle of billions of nerve fibres, the arcuate fasciculus, which integrates the production and the comprehension of language. Can a Machine Learn to Write for The New Yorker? 2019-10-07T04:00:00Z An example of an excruciating neuropathic pain is that which accompanies diabetic neuropathy, a condition in which blood-sugar anomalies damage tiny blood vessels at the extremities that supply the body’s smallest nerve fibres. Analgesia without opioids 2019-09-10T04:00:00Z Left too long, however, the nerve fibres in the optic nerve die and the damage becomes permanent. Teenager 'blind' from living off crisps and chips 2019-09-02T04:00:00Z In those people, “there’s real potential to see a neurologic recovery”, he says, and possibly even growth of new nerve fibres. How a revolutionary technique got people with spinal-cord injuries back on their feet 2019-07-30T04:00:00Z Seung’s lab will align the resulting images, and then annotate the synapses and trace, or segment, the estimated four kilometres of nerve fibre that are contained within the volume. How to map the brain 2019-07-23T04:00:00Z In this disorder, the immune system disrupts communication in the central nervous system by attacking myelin, a fatty substance that forms a protective layer around nerve fibres. Eyes hint at hidden mental-health conditions 2019-04-09T04:00:00Z Sneddon showed that pinching and pricking fish activates these nerve fibres. Are we wrong to assume fish can't feel pain? 2018-10-30T04:00:00Z A hallmark of the disease multiple sclerosis is an inflammatory autoimmune attack1 on the proteins of the myelin sheath, a structure that wraps around the nerve fibres that project from neurons. Immune-cell crosstalk in multiple sclerosis 2018-10-21T04:00:00Z Indeed, because CLP290 does not promote the growth of new neural connections, this treatment would be expected to be effective only after an SCI that spares a substantial proportion of nerve fibres. Reducing neuronal inhibition restores locomotion in paralysed mice 2018-09-16T04:00:00Z That effort used magnetic resonance imaging to scan the brains of about 1,200 people to define millimetre-wide tracts of nerve fibres that connect regions of the brain. How to map the brain 2019-07-23T04:00:00Z The fibroblasts produce a molecule called collagen 12, which changes the structure of the support matrix that surrounds nerve fibres. Scientists hope fish clues aid spinal cord injury treatment - BBC News 2017-07-25T04:00:00Z Aged six he contracted Transverse Myelitis a neurological condition in which the spinal cord is inflamed and damages nerve fibres. Wheelchairs on grass, you cannot be serious! - BBC News 2017-07-12T04:00:00Z The myelin sheath provides protection and nourishment to nerve fibres and enables efficient transmission of nerve impulses. Immune-cell crosstalk in multiple sclerosis 2018-10-21T04:00:00Z Jaynes believed that the development of nerve fibres connecting the two hemispheres gradually integrated brain function. The Voices in Our Heads 2017-01-01T05:00:00Z The Developing Human Connectome Project is imaging nerve fibres in the brains of newborns.Credit: How to map the brain 2019-07-23T04:00:00Z D'Lima and Goldberg managed this by creating a scaffold with a radial pattern that mimics the direction of the nerve fibres in the eyes, then printing the cells along those radial lines. Technology: The promise of printing : Nature : Nature Research 2016-12-06T05:00:00Z T cells and B cells are thought to remove a protective coating called myelin that wraps around nerve fibres in the brain, spinal column and optic nerve. Biology: A degenerative affliction : Nature : Nature Research 2016-11-29T05:00:00Z For example, the corpus callosum, a massive bundle of nerve fibres connecting the two sides of the brain, is significantly larger in musicians. Want to 'train your brain'? Forget apps, learn a musical instrument 2016-10-24T04:00:00Z Neuropathy is caused by metabolic factors as well as by damage to the microvasculature that supplies nerve fibres. The pain drain : Nature : Nature Publishing Group 2016-07-12T04:00:00Z In MS the protective layer surrounding nerve fibres in the brain and spinal cord - known as myelin - becomes damaged. New treatment can 'halt' multiple sclerosis, says study - BBC News 2016-06-09T04:00:00Z In MS the body's immune system mistakenly attacks the protective layer of myelin that surrounds nerve fibres in the brain and spinal cord, leading to muscle weakness and other symptoms. Scientists discover an inherited gene for MS - BBC News 2016-06-01T04:00:00Z The non-hereditary neurological disease is the result of the protective layer surrounding nerve fibres - known as myelin - becoming damaged. Final whistle: How MS ended an England footballer's career - BBC News 2016-04-13T04:00:00Z In MS, the protective layer surrounding nerve fibres in the brain and spinal cord - known as myelin - becomes damaged. Ashleigh Mills: Belles midfielder quits because of MS 2016-03-10T05:00:00Z The team believe the OECs will enable nerve fibres to regenerate across the cord and so repair the damage. Global search for paralysis trial patients - BBC News 2016-03-04T05:00:00Z Thousands of thin coloured wires, like spaghetti, show the cabling of the human brain - with each wire representing a bundle of axons or nerve fibres. Why brains are beautiful - BBC News 2016-02-16T05:00:00Z The treatment involves using lower-dose chemotherapy to kill the white blood cells that are responsible for attacking nerve fibres, and then rebooting the immune system using stem cells collected from the patient before treatment began. Curing multiple sclerosis 2016-01-21T05:00:00Z Formed by chemicals in the air, they are absorbed by little hairs, made of extremely sensitive nerve fibres, hanging from the nose's olfactory receptors. The potential to sniff out disease - BBC News 2015-10-22T04:00:00Z Unrelated work7 has shown that germ-free mice are protected from an experimentally induced condition similar to multiple sclerosis, which is characterized by demyelination of nerve fibres. The tantalizing links between gut microbes and the brain 2015-10-13T04:00:00Z It acts like the insulation around a cable to allow electrical signals to be passed down the nerve fibre. First drug 'slows decline' in progressive MS - BBC News 2015-10-08T04:00:00Z Axons — nerve fibres — and the ion channels that amplify the electrical signals that pass along them are of molecular dimensions and require little energy. Modelling: Build imprecise supercomputers 2015-09-28T04:00:00Z Christened Project Cyborg, his experiments later extended to more sophisticated implants, including a 100-electrode chip implanted into the nerve fibres of his arm in 2002 that transmitted signals from his wrist to a computer. Body-hackers: the people who turn themselves into cyborgs 2015-08-14T04:00:00Z Increasingly, neuroscientists believe that the key to understanding how the brain works lies in its over-all neural circuitry, and the way that widely separated brain regions communicate through the long-range projection of nerve fibres. Goodbye, fMRI 2015-05-11T04:00:00Z When they looked at the nerves using a microscope, the team saw that the nerve fibres themselves were wound tightly into the central core and "unfold" as the cable stretches. Big whales have stretchy nerves to help them gulp - BBC News 2015-05-05T04:00:00Z These squid are prized for their giant nerve fibres, which allow biologists to study neurotransmission in exquisite detail. Not your average technician 2015-01-27T05:00:00Z White matter contains millions of nerve fibres which act as communication cables between the brain's regions. US footballers 'show brain changes' 2014-12-01T05:00:00Z These studies investigate the entire biological mechanism, from the peripheral nerve fibres in the skin through to the brain and central nervous system, where pain is perceived. Neurobiology: Life beyond the pain : Nature : Nature Publishing Group 2014-11-11T05:00:00Z Relocated to the spinal cord, they appear to enable the ends of severed nerve fibres to grow and join together – something that was previously thought to be impossible. Paralysed man Darek Fidyka walks again after pioneering surgery 2014-10-20T04:00:00Z OECs act as pathway cells that enable nerve fibres in the olfactory system to be continually renewed. Man walks again after transplant 2014-10-20T04:00:00Z This then generates an electrical current in nerve fibres - mimicking the usual electrical activity in the brain. Electrical stimulation 'aids memory' 2014-08-28T04:00:00Z Melanoma cells with dark blue nuclei use muscle fibres, nerve fibres and blood vessels to find their way as they infiltrate mouse skin tissue. Imaging: Cancer caught in the act 2014-05-07T17:20:20.854Z The immediate next step for the project is to plug in the system used to model how nerve fibres in the worm fire to get muscle segments twitching and propelling the whole creature forward. Artificial worm starts to wriggle 2013-12-20T14:49:56Z Oligodendrocytes produce the myelin sheath, the insulating material that surrounds nerve fibres called axons. Neuroscience: Map the other brain 2013-09-05T20:20:29.767Z They also traced individual nerve fibres through 0.5-millimetre-thick slabs of formalin-preserved autopsied human brain — orders of magnitude thicker than slices currently imaged. See-through brains clarify connections 2013-04-10T17:20:27.913Z OCT measures the thickness of nerve fibres housed in the retina at the back of the eye. Simple eye scan can reveal MS damage 2012-12-25T00:27:17Z Like Langerhans cells, mast cells are found in large numbers in the upper layers of the skin, near nerve fibres. Psychodermatology: An emotional response 2012-12-19T18:21:00.890Z The researchers say the transplanted cells regenerated nerve fibres across the damaged region of the spinal cord. Nose cells let paralysed dogs walk 2012-11-19T00:51:09Z Both processes are influenced by experience — underused nerve fibres are pruned, whereas others are myelinated — so they occur at different rates and times in different people. Brain Connectivity Predicts Reading Skills 2012-10-09T14:45:09.213Z It protects nerve fibres and helps messages pass along the nerves. Cholesterol 'helps' damaged brain 2012-06-17T17:24:50Z Imagine your spinal cord as a motorway, the cars travelling up and down are the nerve fibres carrying messages from your brain to all parts of the body. 'Hope' for the paralysed? 2012-06-01T16:19:49Z Activated mast cells release substances such as histamine that can stimulate the growth of sensory nerve fibres, which are more prevalent in psoriatic lesions. Psychodermatology: An emotional response 2012-12-19T18:21:00.890Z If, then, different fibres are tuned to tones of different pitch, it is evident that we have here a mechanism which, by exciting different nerve fibres, will give rise to sensations of pitch. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2 "Hearing" to "Helmond" 2012-04-25T02:00:53.567Z The nerve fibres of the author's brain were traced by diffusion spectrum imaging, and coloured to represent their direction. Neuroscience: Making connections 2012-03-21T18:20:47.923Z There is a certain intercommunication between the impulses which pass along these various nerve fibres. Essays In Pastoral Medicine 2012-03-05T03:00:09.993Z The stimulus conveyed by the nerve fibre to the muscle is out of all proportion to the amount of work it may cause the muscle to do. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 8 "Cube" to "Daguerre, Louis" 2012-01-31T03:00:17.257Z This organ consists of laminæ composed of polygonal cells to the number of 800 or 1000, or more, supplied with four large bundles of nerve fibres; the under surface of the fish is -, the upper +. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z It is the same with the nerve fibres as with the nerve centres, but in less degree. Martyria or Andersonville Prison 2011-10-22T02:00:28.563Z The presumption is that any two regions with a consistently high correlation are linked — perhaps by an actual bundle of nerve fibres, but certainly by working together in some way. Neuroscience: Making connections 2012-03-21T18:20:47.923Z "One at least of the processes of a multipolar nerve cell does not branch, but becomes directly continuous with a nerve fibre, and has been named the axial-cylinder process." The Relations of Science and Religion The Morse Lecture, 1880 2011-09-11T02:00:11.613Z The brain and cord are made up of blood-vessels, nerve cells, nerve fibres, and, holding them all together, connective tissue. How to Care for the Insane A Manual for Nurses 2011-08-22T02:00:55.510Z It occurs when the protective coating, known as the myelin sheath, around nerve fibres in the brain and spinal cord begins to break down, slowing the brain's communication with the rest of the body. Scientists unravel genetic clues to multiple sclerosis 2011-08-10T17:07:23Z Scientists say they have discovered a "maintenance" protein that helps keep nerve fibres that transmit messages in the brain operating smoothly. Brain disorder 'messaging clue' 2011-03-14T00:09:12Z It is now known that there exist peculiar spindles, in muscle, and rosettes or coils or loops of nerve fibres in close proximity to tendons. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 7 "Equation" to "Ethics" 2011-02-27T03:00:31.973Z "The central extremities of the nerve fibres lie in relation to, and are often directly connected with the nerve cells." The Relations of Science and Religion The Morse Lecture, 1880 2011-09-11T02:00:11.613Z They occur only after sudden or acute damage to the nerve cells of the anterior horn of the spinal cord, or to the motor nerve fibres proceeding from these cells. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z And, as each little compartment is surrounded by opaque colouring matter, it is clear that perpendicular rays only are capable of penetrating to its base and exciting the nerve fibre that lies there. Butterflies and Moths (British) The brain works like an electrical circuit, sending impulses along nerve fibres in the same way that current is sent through wires. Brain disorder 'messaging clue' 2011-03-14T00:09:12Z But they also receive the nerve fibres of the optic nerve. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 3 "Apollodorus" to "Aral" From the elongated bodies, the nerve fibres pass across to the opposite sides of the body. The Relations of Science and Religion The Morse Lecture, 1880 2011-09-11T02:00:11.613Z They possess an irregular body, giving off 4 or 5 dendrites, which terminate within the molecular layer and a long nerve fibre process or neuraxon which runs parallel to the surface of the convolution. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" We make two preparations, one of nerve fibres and of nerve cells of the poisoned frog, and, under the microscope, compare them carefully with an analogous one from the killed healthy frog. On Snake-Poison: its Action and its Antidote It has just been said that two minds may be brought into telegraphic communication by means of nerve fibres. The Galaxy, Volume 23, No. 2, February, 1877 The sensory nerve fibres conveying these different impulses pass to the ganglionic cells of the posterior nerve roots. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. By this provision the nerve fibres are completely isolated making it possible to distinguish sensory impressions so as to tell which finger has been touched. The Relations of Science and Religion The Morse Lecture, 1880 2011-09-11T02:00:11.613Z The pons consists of white and grey matter: the nerve fibres of the white matter pass through the substance of the pons, in either a transverse or a longitudinal direction. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" In many Crustacea and Insects there are flattened hairs each connected with a nerve fibre, and so constituted as to vibrate in response to particular notes. The Beauties of Nature and the Wonders of the World We Live In Thus in diphtheria changes in both nerve cells and nerve fibres have been found, and in tetanus minute alterations in the nucleus and protoplasm of nerve cells. Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy" These sensations are carried by medullated nerve fibres, and are slow to return after injury to the nerves. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. Retinula -ae: the retina of a single ocellus: the nerve fibres or cells between pigment cells and retina of the compound eye. Explanation of Terms Used in Entomology Histology of the Cerebellum.—The white centre of the cerebellum is composed of numbers of medullated nerve fibres coursing to and from the grey matter of the cortex. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" In others the ear cavity contains certain minute solid bodies, known as otoliths, which in the same way play upon the nerve fibres. The Beauties of Nature and the Wonders of the World We Live In But the so-called motor nerve fibres include not only those that set muscles in motion, but those that excite secretion, check impulsive movements, and govern nutrition. Text Book of Biology, Part 1: Vertebrata The study of these corpuscles was also taken up by Sir Charles Bell, who, in 1874, demonstrated that each corpuscle contained the end of a nerve fibre, and was in immediate connection with the brain. Palmistry for All Neurilemma: the external sheath of a nerve fibre. Explanation of Terms Used in Entomology Their inner ends taper and finally end in a nerve fibre which may be traced into the white centre. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" Cuvier knew, for example, that each muscle fibre has its own nerve fibre. Form and Function A Contribution to the History of Animal Morphology The function of nerve fibres is simply conduction, and the nature of the impressions they convey is entirely determined by the nature of their distal and proximal terminations. Text Book of Biology, Part 1: Vertebrata The excitatory state evoked by stimulus manifests itself in nerve fibres by E.M. changes, and as far as our present knowledge goes by these only. Response in the Living and Non-Living The external are called skins, membranes and coverings; the internal are forms variously composed and woven of nerve fibres and blood vessels. Angelic Wisdom about Divine Providence When the ends are not in contact, reunion of the divided nerve fibres does not take place whether the wound is infected or not. Manual of Surgery Volume First: General Surgery. Sixth Edition. Pressure increases this pain, when the condition of the nerve fibre is interfered with. Mother's Remedies Over One Thousand Tried and Tested Remedies from Mothers of the United States and Canada The nerve fibres of this system, like the nerve fibres of invertebrates, are non-medullated. Text Book of Biology, Part 1: Vertebrata A piece of nerve fibre, showing the cell with its nucleus at n. The Story of the Living Machine A Review of the Conclusions of Modern Biology in Regard to the Mechanism Which Controls the Phenomena of Living Activity The white matter in the interior of the brain formed of nerve fibres which connect the various parts of this. Disease and Its Causes A tumour composed of newly formed nerve tissue is spoken of as a true neuroma; when ganglionic cells are present in addition to nerve fibres, the name ganglionic neuroma is applied. Manual of Surgery Volume First: General Surgery. Sixth Edition. The possibility of infection decreases with the formation of the new connective tissue which protects the ends of the broken nerve fibres. Mother's Remedies Over One Thousand Tried and Tested Remedies from Mothers of the United States and Canada The nerve fibres there figured are bound together by endoneurium into small ropes, the nerves, encased in perineurium. Text Book of Biology, Part 1: Vertebrata It had dragged the fur off its leg, and white nerve fibres, torn bare, glimmered in the red flesh under the moon. Children of the Mist The memory faculty is seated in the brain and all parts of the brain are closely connected by means of small nerve fibres. Disease and Its Causes Painful Scars.—Pain in relation to a scar is usually due to nerve fibres being compressed or stretched in the cicatricial tissue; and in some cases to ascending neuritis. Manual of Surgery Volume First: General Surgery. Sixth Edition. He claims it prevents the night itching by pressing upon the many veins and terminal nerve fibres of the parts. Mother's Remedies Over One Thousand Tried and Tested Remedies from Mothers of the United States and Canada Although each hemisphere is especially related to the opposite half of the body, the two are unified in function by a great bridge of nerve fibres, called the corpus callosum, which unites them. The Brain and the Voice in Speech and Song It is composed of connective-tissue elements permeated by nerve fibres which have grown out from the axis-cylinders of the nerve stump. Diseases of the Horse's Foot But it is admitted that the nerve fibres constitute an uninterrupted network which admits of no endings--that is, whose ultimate reticulations lie beyond the microscopic limit. Life: Its True Genesis Anatomy.—A nerve-trunk is made up of a variable number of bundles of nerve fibres surrounded and supported by a framework of connective tissue. Manual of Surgery Volume First: General Surgery. Sixth Edition. The nerves form white cords that are made up of nerve fibres. Common Diseases of Farm Animals That is, there may be a bigger stomach or a smaller stomach, larger nerve fibres or smaller. The Glands Regulating Personality Professor Hering adds that memory is due to vibrations of the molecules of the nerve fibres, which under certain circumstances recur, and bring about a corresponding recurrence of visible action. Unconscious Memory Among the tissue-cells of the animal body many of the muscular fibres and nerve fibres are more than four inches, and sometimes more than a yard, in length. The Evolution of Man — Volume 1 Each nerve fibre consists of a number of nerve fibrils collected into a central bundle—the axis cylinder—which is surrounded by an envelope, the neurolemma or sheath of Schwann. Manual of Surgery Volume First: General Surgery. Sixth Edition. This cord is connected with groups of ganglia and nerve fibres in the abdominal region, and this in turn is connected with terminal ganglia in distant tissues. Common Diseases of Farm Animals Each of these muscles contains a stock of substance capable of yielding energy under certain conditions, one of which is a change of state in the nerve fibres connected with it. Evolution and Ethics There is tearing of the nerve sheaths, with hæmorrhage, but in severe cases partial or complete severance of nerve fibres may occur and these give way at different levels. Manual of Surgery Volume First: General Surgery. Sixth Edition. The features are those of a rapidly growing sarcoma involving a nerve-trunk, with agonising pain and muscular cramps, followed by paralysis from destruction of the nerve fibres. Manual of Surgery Volume First: General Surgery. Sixth Edition. Traumatic Neuritis.—This consists in an overgrowth of the connective-tissue framework of a nerve, which causes irritation and pressure upon the nerve fibres, sometimes resulting in their degeneration. Manual of Surgery Volume First: General Surgery. Sixth Edition. The nerve fibres may be spread out all round the tumour, or may run only on one side of it. Manual of Surgery Volume First: General Surgery. Sixth Edition. It has the same characters and clinical features as the innocent variety, only it grows more rapidly, and by destroying the nerve fibres causes motor symptoms—jerkings followed by paralysis. Manual of Surgery Volume First: General Surgery. Sixth Edition. The degeneration in the central end of the divided nerve is usually limited to the immediate proximity of the lesion, and does not even involve all the nerve fibres. Manual of Surgery Volume First: General Surgery. Sixth Edition. The nerve fibres, although mechanically displaced and dissociated by the overgrown endoneurium, undergo no structural change except when compressed in passing through a bony canal. Manual of Surgery Volume First: General Surgery. Sixth Edition. Other Injuries of Nerves.—Contusion of a nerve-trunk is attended with extravasation of blood into the connective-tissue sheaths, and is followed by degeneration of the contused nerve fibres. Manual of Surgery Volume First: General Surgery. Sixth Edition. Function is usually restored, the conducting paths being re-established by the formation of new nerve fibres. Manual of Surgery Volume First: General Surgery. Sixth Edition. The toxin acts principally on the nerve centres in the spinal medulla, to which it travels from the focus of infection by way of the nerve fibres supplying the voluntary muscles. Manual of Surgery Volume First: General Surgery. Sixth Edition. |
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