Applied anatomy and kinesiology : the mechanism of muscular movement / by Wilbur Pardon Bowen.

  • Bowen, Wilbur Pardon, 1864-1928
Date:
1928
Catalogue details

Licence: In copyright

Credit: Applied anatomy and kinesiology : the mechanism of muscular movement / by Wilbur Pardon Bowen. Source: Wellcome Collection.

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    the number of variations in the arrangement can be multiplied indefinitely, showing that a longitudinal muscle having a certain bulk will do its work in different ways according to number and length of its fibers, still doing the same amount of work in every case. Origin Mu Origin C M Aright S00 gr. B Origin M n .s* • i c A ~i 1_ 400 gr. CO 200 gr. ~] Fig. 4.—Diagram of three longitudinal muscles, showing how number and length of fibers affect power and extent of movement. .4 has 800 fibers 4 cms. long, B has 400 fibers 8 cms. long, and C has 200 fibers 10 cms. long. Arrows indicate extent of contraction. As a matter of fact the many longitudinal muscles in the body illustrate just so many different arrangements on the same general plan, alike in consisting of parallel fibers running lengthwise of the muscle and differing in bulk and in the number and length of fibers. As two extreme instances we may take the sartorius (Fig. 92), which is it narrow band of extremely long fibers, suited to perform
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