The class-book of anatomy : designed for schools, explanatory of the first principles of human mechanism, as the basis of physical education . ngle heart? Can any animal exist long, deprived of its heart? What is understood by the irritability of the heart? ANATOMICAL, CLASS BOOK. 153 THE NERVES, OH NEUROLOGY. Neurology teaches us the anatomy and physiology ofthe nerves. The brain is the radiating point whence the nerves,to a considerable extent, have their origin. The spinalmarrow, from which an immense number of nerves branchout, is considered in reality by some, a prolongation ofthe brain i
The class-book of anatomy : designed for schools, explanatory of the first principles of human mechanism, as the basis of physical education . ngle heart? Can any animal exist long, deprived of its heart? What is understood by the irritability of the heart? ANATOMICAL, CLASS BOOK. 153 THE NERVES, OH NEUROLOGY. Neurology teaches us the anatomy and physiology ofthe nerves. The brain is the radiating point whence the nerves,to a considerable extent, have their origin. The spinalmarrow, from which an immense number of nerves branchout, is considered in reality by some, a prolongation ofthe brain itself. Phrenologists, on the other hand, sup-pose the brain arises from the spinal marrovv, because thebrain is sometimes wanting, but the nerves are alwayspresent. In the first place, the contents of the head are dividedinto the art brum and cerebellum, or in other words, thegreat and small brains. Above the level of the ears, allthe upper portion of the skull is occupied by the cerebrum,which is the immediate seat of intellect. Below that level,in the lower and back part of the head, is the cerebellum 154 ANATOMICAL CLASS 64. Explanation of Fig. is an exhibition of a vertical section of the bones of the head,face and brain, showing precisely the appearance, were the head di-vided in the middle, from the top, down to the neck. No letters ofreference have been introduced, because the plate will be doublyvaluable, when the general relation of the different portions havebeen learned from the text and the other diagrams. The reader willthen trace with his eye the outline of the little brain, the cerebrum,or large brain, the seat of thought; the ventricles and other interest-ing points, which, though intricate, are nevertheless worth the trou-ble of understanding. The mechanical arrangement is only contem-plated in these illustrations: — the functions of the brain in a treatise,purely elementary, would be wholly useless. or little brain. They are separated from
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Keywords: ., bookcentury1800, bookdecade1830, booksubjectanatomy, bookyear1834
