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Medical ArticlesThe Use Of Forceps In Endoscopic Foreign Body ExtractionTwo different strengths of forceps are supplied, as will be s... Paralysis Of The Esophagus The passage of liquids and solids through the esophagus is a ... Convalescence When compensation has been restored, the patient may be allow... To Prevent Itch A dose of _Sulphur_, or rubbing a little flour of sulphur on ... Other Forms Of Rest DO you hold yourself on the chair, or does the chair ... Alcohol It is rarely, if ever, advisable to use alcohol. In certain ... Sciatica This is a severe pain in the lower back, shooting sharply down... Catarrh Is simply an inflammation due to impurity of the blood. These ... Paroxysmal Tachycardia Management There is no specific treatment for paroxysmal tachycardia. Wh... Convulsions Of Children - Fits These generally occur, either from the irritation of worms, o... Aortic Stenosis Aortic narrowing or stenosis is a frequent occurrence in the ... Conium is valuable as a _palliative_ upon cancerous tumors. As a _cu... The Care Of The Heart-pump The Effect of Work upon the Heart. Whatever else in this body... Glands Swollen This is a very common trouble, especially in the young. To res... Punctures Case Xii A servant maid was bitten by a dog in four places--severely o... Asiatic Cholera I was practicing in Cincinnati during the prevalence of Chole... Breath And Muscles Sometimes difficulty of breathing is due, not to anything wron... Children's Swellings Sometimes these occur as merely relaxed tissue full of blood. ... Bedsores There are cases in which the outer skin has been taken off by ... Eyes Failing Sight This often comes as the result simply of an over-wearied body ... |
The Nerves In The SkinCategory: HOW TO KEEP THE SKIN HEALTHY Source: A Handbook Of Health How We Tell Things from Touch, and Feel Heat and Cold and Pain. Last of all, the skin is the principal organ of the sense of touch, and also of the temperature sense--the sense of heat and cold--and of the sense that feels pain. All these feelings are attended to by little bulbs lying in the deeper part of the skin and forming the tips of tiny nerve twigs,[20] which run inward to join larger nerve branches and finally reach the spinal cord. There are millions of these little bulbs scattered all over the surface of the skin, but they are very much thicker and more numerous in some parts than in others; and that is why, as you have often noticed, certain parts of the skin are more sensitive than others. They are thickest, for instance, on the tips of our fingers and on our lips, and fewest over the back of the neck and shoulders, and across the lower part of the hips.[21] For a long time, it was supposed that all these little nerve-bulbs in the skin did the same kind of work, because they looked, under the microscope, exactly alike; but it was found that they divide the work up among them, so that some of them give their entire attention to heat, and others to cold, others to touch, and others again to pain. So carefully has the work been mapped out among them that they report to different centres in the brain and spinal cord, so that we now understand why, in diseases which happen to attack one or other of these centres, we may lose our sense of heat and cold, as in that terrible disease, leprosy; or our sense of touch, as in paralysis; or we may even, in some very rare cases, lose our sense of pain, and yet have all our other senses perfect. Next: Clothing Previous: The Blood-mesh Of The Skin
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