Ischiopubic ramus
Encyclopedia
The ischiopubic ramus is a compound structure consisting of the following two structures:
It serves as part of the origin for the Obturator internus muscle
.
It also marks a vertex of the anal triangle
and the urogenital triangle
.
The fascia of Colles
is attached to its margin.
- from the pubisPubis (bone)In vertebrates, the pubic bone is the ventral and anterior of the three principal bones composing either half of the pelvis.It is covered by a layer of fat, which is covered by the mons pubis....
, the inferior pubic ramusInferior pubic ramusThe inferior pubic ramus is a part of the pelvis and is thin and flat. It passes laterally and downward from the medial end of the superior ramus; it becomes narrower as it descends and joins with the inferior ramus of the ischium below the obturator foramen.... - from the ischium, the inferior ramus of the ischiumInferior ramus of the ischiumThe Inferior Ramus of the ischium is the thin, flattened part of the ischium, which ascends from the superior ramus, and joins the inferior ramus of the pubis—the junction being indicated in the adult by a raised line....
It serves as part of the origin for the Obturator internus muscle
Obturator internus muscle
The 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....
.
It also marks a vertex of the anal triangle
Anal triangle
The anal triangle is the posterior part of the perineum. It contains the anal canal.-Structure:The anal triangle can be defined either by its vertices or its sides.* Vertices** one vertex at the coccyx bone...
and the urogenital triangle
Urogenital triangle
The urogenital triangle is the anterior part of the perineum. In females, it contains the vagina and associated parts of the external genitalia.-Structure:...
.
The fascia of Colles
Fascia of Colles
The deep layer of superficial fascia is thin, aponeurotic in structure, and of considerable strength, serving to bind down the muscles of the root of the penis.It separates the skin from the superficial perineal pouch.-Relations:...
is attached to its margin.