The ischiopubic ramus is a compound structure consisting of the following two structures:
* from the
pubis, the
inferior pubic ramus
In vertebrates, the pubic region ( la, pubis) is the most forward-facing (ventral and anterior) of the three main regions making up the coxal bone. The left and right pubic regions are each made up of three sections, a superior ramus, inferior ra ...
* from the
, the
It forms the inferior border of the
obturator foramen
The obturator foramen (Latin foramen obturatum) is the large opening created by the ischium and pubis bones of the pelvis through which nerves and blood vessels pass.
Structure
It is bounded by a thin, uneven margin, to which a strong membran ...
and serves as part of the origin for the
obturator internus
The internal obturator muscle or obturator internus muscle originates on the medial surface of the obturator membrane, the ischium near the membrane, and the rim of the pubis.
It exits the pelvic cavity through the lesser sciatic foramen.
The i ...
and
externus muscles. Also, most
adductors originate at the ischiopubic ramus.
The
fascia of Colles
The membranous layer of the superficial fascia of the perineum (Colles' fascia) is the deeper layer ( membranous layer) of the superficial perineal fascia. It is thin, aponeurotic in structure, and of considerable strength, serving to bind down th ...
is attached to its margin.
References
External links
* - "The Female Perineum"
*
* (, )
Bones of the pelvis
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