ligamentum triangulare

per·i·ne·al mem·brane

[TA]
the layer of fascia extending between the ischiopubic rami inferior to the sphincter urethrae and the deep transverse perineal muscles.

ligamentum triangulare

(1) Perineal membrane (see there); membrana perinei [NA6]. 
(2) (Inferior fascia of urogenital diaphragm); (fascia diaphragmatis urogenitalis inferior) [NA6].
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