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Hence, in order to bring about the opposing movements of the body, each muscle must work against some force that produces a result directly opposite to that which the muscle produces. But in most cases, muscles work against muscles. The striated, or skeletal, muscles are nearly all arranged after the last-named plan.
There may have been some differences in the skeletal and muscular structure. The vocal organs, for instance, probably differed, the evolution of language in man being accompanied with certain changes in the larynx. The skull was certainly much more ape-like. Yet variations of this kind, due to differences in mode of life, are minor in importance, and may easily come within the limits of a species.
This membrane lines the structures that enclose the articulation and secretes a fluid, the synovia, that lubricates the surfaces. The muscles are the contractile organs that move the body. The movement of the different parts of the body is rendered possible through the manner in which the skeletal muscles are inserted into the long bones, by which the lever motion is possible.
He told himself that to claim that he would always be there for the hurting and the vulnerable lacked veracity. "He began to have a recurrent nightmare of sorts, replete in twisted skeletal boughs; and there he saw something like himself in adult form trying to glean movements of lissome shadows through the crevices around a board that went over one window.
*Prevention of Skeletal Deformities.*—Those deformities of the skeleton that are acquired through improper positions are prevented by giving sufficient attention to the positions assumed in sitting, standing, and sleeping, and also to the posture in various kinds of work. In sitting the trunk should be erect and the hips should touch the back of the chair.
Spencer supports his argument by the non-segmentation of the anterior end of the skeletal axis, i.e. by the non-segmentation of the skull.
Much, however, might be said in opposition to more than one of that brilliant dramatist's smart philosophical epigrams, just as to the theological ones of Voltaire, or to the biological one of that other Frenchman who for a time discredited a cranial skeletal theory by the phrase "Vertèbre pensante."
The clutching bones dropped the rattling Scythe, and the handle broke as it fell, and rotted before their eyes. "Heh, heh," the Thing cackled as it watched. "Heh what Death touches, rots as he leaves it." The grinning, blackened skull grinned wider, in an awful, leering cavity, rotting, twisted teeth showed. But from under his flapping robe, the skeletal hands drew something ray pistols!
How does the matter stand when the general structural plan of a human being is examined? Is it entirely different from everything else? It is a fact of common knowledge that the human body is supported by a bony axis, the vertebral column, to which the skull is articulated and to which also the skeletal framework of the limbs is attached.
In view of the fragmentary character of the skeletal evidence, the fact that no proof of great antiquity could be drawn from the characters of the human skeletal parts, and the suggestion made by Dr. Bowman of the possibility that the gravels which contained the bones might be of a later origin than he thought, we determined to make further and more complete investigations in 1912.
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