Читать книгу The House We Live In; or, The Making of the Body онлайн

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Reels of cotton.

Elmer: The boy with his hands in his pockets does not have a good figure.

Mother: No; and if he were to go into the army, the first thing he would have to learn would be to “straighten up,” and give his spinal column a chance to grow the right way.

Now we will look at the ribs. They are fastened to the spinal column at the back, and all but four are fastened to the breast-bone in front. There are twelve ribs on each side. There are two bones on the upper part of the back, which seem to dance every time you move your arm. These are the “shoulder blades.” They are thin, flat bones, which help make the shoulder joint. You can feel two bones near your neck in front, which are called “collar bones.” They are shaped much like the letter f, and serve to preserve the shape of the shoulders.

Ribs.

Amy: How many bones do we have in our arms, mother?

Bones of the arm.

Mother: There are three in each arm,—one from the shoulder to the elbow, and two from the elbow to the wrist. There are a large number of bones in the wrist and hand.