anal triangle


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a·nal tri·an·gle

[TA]
the posterior portion of the perineal region through which the anal canal opens; bounded by a line through both ischial tuberosities, the sacrotuberous ligaments, and the coccyx.
Synonym(s): regio analis [TA], anal region

anal triangle

The dorsal triangular region of the perineum from the point at the tip of the coccyx to a line between the two ischial tuberosities. The anal triangle contains the anus.
See also: triangle