This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1910 Excerpt: ...leg. Important extensor muscles lie on the back of the hand and arm, and on the front of the leg. Flexor muscles bend the fingers, arms, legs, and toes, and extensor muscles pull them straight. Muscles of Expression.--The score of muscles controlling the eyes, mouth and other features of the face are the muscles of ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1910 Excerpt: ...leg. Important extensor muscles lie on the back of the hand and arm, and on the front of the leg. Flexor muscles bend the fingers, arms, legs, and toes, and extensor muscles pull them straight. Muscles of Expression.--The score of muscles controlling the eyes, mouth and other features of the face are the muscles of expression. On their action depends largely whether one has a pleasing or ugly countenance. In one who is accustomed to pout, frown or cry about every trifle or annoyance, the muscles become so trained to pulling down the corners of the mouth, pushing out the lips, and wrinkling the forehead, that the face can never have a pleasant look. Need of Exercise.--To exercise the muscles means to use them. No boy or girl can have a strong, well formed body unless the muscles are exercised. Every time a muscle is moved, the vessels in it enlarge and allow more blood to flow with the food to make the muscle grow. Exercise is also of great service in pressing the lymph with its waste matter out of its chinks and crevices into the lymph channels. The pressure of the muscles as they Fig. 105.--Using the pouting mus F i G. 106.--Using the muscles for a pleasant expression. contract, squeezes on the lymph and blood vessels, so as to help the circulation. Since the whole body has its waste carried away and an abundance of life-giving oxygen supplied by exercise, one always feels better after a vigorous walk or the playing of an outdoor game. How to Exercise.--Since nearly every one is obliged to do some walking, certain muscles of the legs are sure to get some exercise. In ordinary walking, however, less than one half of the hundred muscles in the legs are brought into use. To get the best exercise out of walking one must walk as fast as possi Fig. I07.-One way ...
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