. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. A, diagram of the pelvic arches:—b, a, b>, cotylo- sacral arch ; c, a, c', ischio-sacral arch ; b, d, I/, cotylo-pubic tie ; c, d, c', ischio-pubic tie. is, diagram of pelvic levers : — c, a, line of gravity ; F, b, pubic lever; F, w, cotylo-sacral lever; w, r, posterior spinal or iliac lever; p, c, direction of spinal power; w, e, direction of spinal weight; F, cotyloid fulcrum; d, femoral support. which it separates the femurs, contributes to produce the waddling gait in running which is characteristic of this metho
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. A, diagram of the pelvic arches:—b, a, b>, cotylo- sacral arch ; c, a, c', ischio-sacral arch ; b, d, I/, cotylo-pubic tie ; c, d, c', ischio-pubic tie. is, diagram of pelvic levers : — c, a, line of gravity ; F, b, pubic lever; F, w, cotylo-sacral lever; w, r, posterior spinal or iliac lever; p, c, direction of spinal power; w, e, direction of spinal weight; F, cotyloid fulcrum; d, femoral support. which it separates the femurs, contributes to produce the waddling gait in running which is characteristic of this method of female pro- gression. Instead of abutments to prevent the extre- mities of the arch starting outwards, we often see, in artificial constructions, a connecting link or tie extending between these extremi- ties to hold them together, or the circle of which the arch is a segment is completed below, as in tunneling. Such a tie and completion of the circle we have in the horizontal rami of the pubic bones, for the cotylo-sacral arch, and in the united ischio-pubic rami, for the ischio-sacral arch ; and they are connected in front, at the pubic symphysis, exactly as these two arches themselves are behind at the sacro-iliac joints. By the vertical ischio-pubic arch thus formed, that portion of the pressure which has a tend- ency to push forward and upward the extre- mities of the ischio-sacral arch, is supported and thrown upon the cotylo-sacral arch, the whole weight of the trunk, in a sitting posture, being thus divided between them The ischio- pubic rami are the parts of the pelvis most liable to fracture, according to Cruveilhier, from the application of force acting on the ischia. The cotylo-pubic arch not only resists the starting outward of the ends of the cotylo-. 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 o
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Keywords: ., bo, booksubjectanatomy, booksubjectphysiology, booksubjectzoology
