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deep inguinal ring
The deep inguinal ring (internal or deep abdominal ring, abdominal inguinal ring, internal inguinal ring) is the entrance to the inguinal canal.
==Location==
The surface marking of the deep inguinal ring is classically described as half an inch above the midpoint of the inguinal ligament (midway between the anterior superior iliac spine and the pubic tubercle).
However, the surface anatomy of the point is disputed. In a recent study it was found to be in a region between the mid-inguinal point (situated midway between the anterior superior iliac spine and the pubic symphysis) and the midpoint of the inguinal ligament (i.e. midway between the anterior superior iliac spine and the pubic tubercle). Traditionally, either one of these 2 sites was claimed as its location. However, this claim is based upon the study's dissection of 52 cadavers, and may not reflect the live ''in vivo'' anatomy.
Some sources state that it is at the layer of the transversalis fascia.
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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