A First Book in Physiology: For the Use of Schools. An Introduction to the Larger Work by the Same Author

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Sheldon, 1883 - Physiology - 191 pages

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Page 112 - This is one reason also why it is made up of so many different bones, instead of being one solid, tight box. If a blow be received on the head, these bones give a little upon each other, as it is expressed, and so they are not often broken. They give more in the child than in the adult, because, besides being less brittle, they are less tightly put together. It is well that it is so ; for if it were not, the skull would often be fractured, in the frequent falls which the child has. 9. The bones on...
Page 97 - ... sends a message to them, because the message can go no further than where the nerves are divided, just as when a telegraph wire is broken, the electricity can go only to the point where it is broken. 9. The nerves are white cords. Each nerve is made up of a great number of tubes. These tubes are so small that they can be seen only by the aid of a very powerful microscope. Each tube is altogether by itself. It is never seen to communicate with any of the other tubes that are bound up with it in...

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