骨盤軸 - Axis pelvis

画像

この解剖学的部位を含む画像はまだありません。

説明

A line at right angles to the plane of the superior aperture at its center would, if prolonged, pass through the umbilicus above and the middle of the coccyx below; the axis of the superior aperture is therefore directed downward and backward. The axis of the inferior aperture, produced upward, would touch the base of the sacrum, and is also directed downward, and slightly backward. The axis of the cavity—i. e., an axis at right angles to a series of planes between those of the superior and inferior apertures —is curved like the cavity itself: this curve corresponds to the concavity of the sacrum and coccyx, the extremities being indicated by the central points of the superior and inferior apertures. A knowledge of the direction of these axes serves to explain the course of the fetus in its passage through the pelvis during parturition.


Text by Antoine Micheau, MD - Copyright IMAIOS

解剖学的階層

一般解剖学 > 骨、骨格系 > 付属肢骨格 > 下肢骨 > 骨盤 > 骨盤軸

翻訳