How to Keep Well; a Text-Book of Physiology And Hygiene for the Lower Grades of Schools
The book How to Keep Well; a Text-Book of Physiology And Hygiene for the Lower Grades of Schools was written by author Albert F Albert Franklin Blaisdell Here you can read free online of How to Keep Well; a Text-Book of Physiology And Hygiene for the Lower Grades of Schools book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is How to Keep Well; a Text-Book of Physiology And Hygiene for the Lower Grades of Schools a good or bad book?
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It extends from the base of the skull to the loins, where it tapers to a point. It is protected from injury, jolts, and jars by its bony canal. The spinal cord is the chief channel through which all messages from the trunk and limbs pass ^o the brain, and all orders or messages to the trunk and limbs pass /rom the brain. Experiments. — The teacher may give pupils a very general idea of the brain by employing a butcher or marketman to dissect away the skin and muscles, saw open the skull, and sa...ve uninjured the brain of a sheep or a calf. In like manner the general build of the spinal cord may be shown by getting at the market an uninjured piece of the spine of a sheep or a calf. A fresh brain or spine should be first soaked in some hardening fluid, as they are too soft for handling in class use. THE NERVOUS SYSTEM 179 247. The Spinal Nerves. — The backbone, as we have been told, is built of thirty-one separate bones, piled one on top of another. Between each one of these bones and the next a pair of nerves is given off from the spinal cord.
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