. Animal mechanics. Animal mechanics. FIG. 25. Supposing the point A to be the fixed point, these fibres draw the point B with less force, but through a larger space, or more quickly than if they took their course in direct lines; and by this arrangement of the fibres the freedom and extent of motion in our limbs are secured. But the muscles must be strengthened by addi- tional courses of fibres, because they are oblique; since by their obliquity they lose something of their force of action : and therefore it is, we must presume, that we find them in a double row, mak- ing what is termed the p
. Animal mechanics. Animal mechanics. FIG. 25. Supposing the point A to be the fixed point, these fibres draw the point B with less force, but through a larger space, or more quickly than if they took their course in direct lines; and by this arrangement of the fibres the freedom and extent of motion in our limbs are secured. But the muscles must be strengthened by addi- tional courses of fibres, because they are oblique; since by their obliquity they lose something of their force of action : and therefore it is, we must presume, that we find them in a double row, mak- ing what is termed the penniform muscle, thus, — and sometimes the texture of the mus- cle is still further compounded by the intermixture of ten- dons, which permit additional series of fibres; and all this for the obvious purpose of accumulating power, which may be exchanged for velocity of movement. We may perceive the same effect to result from the course of the tendons, and their confinement. FIG. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bell, Charles, Sir, 1774-1842; Wyman, Jeffries, 1814-1874. Cambridge [Mass. ] Printed at the Riverside press
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