Class-book of physiology : for the use of schools and families : comprising the structure and functions of the organs of man, illustrated by comparative reference to those of inferior animals . Wg. 61. shoulder, and is inserted at e1 a short distance from theelbow, acts at a great mechanical loss of power in raisingthe fore-arm, but its contraction to a very slight extentwill raise the hand through a considerable space. Thus,since the muscle is inserted about one-sixth of the distancefrom the elbow to the wrist, it will require a force of con-traction in the muscle equal to six pounds to raise
Class-book of physiology : for the use of schools and families : comprising the structure and functions of the organs of man, illustrated by comparative reference to those of inferior animals . Wg. 61. shoulder, and is inserted at e1 a short distance from theelbow, acts at a great mechanical loss of power in raisingthe fore-arm, but its contraction to a very slight extentwill raise the hand through a considerable space. Thus,since the muscle is inserted about one-sixth of the distancefrom the elbow to the wrist, it will require a force of con-traction in the muscle equal to six pounds to raise onepound at the wrist, while its contraction of one inch will In what cases of great nervous excitement is this frequently observed!What example is given 1 What other purpose do the bones serve besidesaffording attachment for the muscles ? How do most of the muscles act odthe bones 1 What law of mechanics in regard to this ? Explain Figure 65What force in the muscle will be required to raise one pound at the wrist?. -?:> OW^ 1 V-
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectphysiologicalprocess
