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inferior pubic ramus
The inferior pubic ramus is a part of the pelvis and is thin and flat. It passes laterally and downward from the medial end of the superior ramus; it becomes narrower as it descends and joins with the inferior ramus of the ischium below the obturator foramen.
==Surfaces==
Its ''anterior surface'' is rough, for the origin of muscles—the Gracilis along its medial border, a portion of the Obturator externus where it enters into the formation of the obturator foramen, and between these two, the Adductores brevis and magnus, the former being the more medial.
The ''posterior surface'' is smooth, and gives origin to the Obturator internus, and, close to the medial margin, to the Constrictor urethrae.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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