Inferior ramus of the ischium
- Inferior ramus of the ischium
Infobox Bone
Name = Inferior ramus of the ischium
Latin = ramus inferior oss. ischii
GraySubject = 57
GrayPage = 235
Caption = Right hip bone. External surface.
Caption2 =
System =
MeshName =
MeshNumber =
DorlandsPre =
DorlandsSuf =
The Inferior Ramus of the ischium (ascending ramus) 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.
The outer surface is uneven for the origin of the obturator externus and some of the fibers of the adductor magnus; its inner surface forms part of the anterior wall of the pelvis.
Its medial border is thick, rough, slightly everted, forms part of the outlet of the pelvis, and presents two ridges and an intervening space.
The ridges are continuous with similar ones on the inferior ramus of the pubis: to the outer is attached the deep layer of the superficial perineal fascia (fascia of Colles), and to the inner the inferior fascia of the urogenital diaphragm.
If these two ridges be traced downward, they will be found to join with each other just behind the point of origin of the transversus perinæi; here the two layers of fascia are continuous behind the posterior border of the muscle.
To the intervening space, just in front of the point of junction of the ridges, the transversus perinæi is attached, and in front of this a portion of the crus penis vel clitoridis and the ischiocavernosus.
Its lateral border is thin and sharp, and forms part of the medial margin of the obturator foramen.
External links
*
Wikimedia Foundation.
2010.
Look at other dictionaries:
Ramus of the ischium — can refer to: * Superior ramus of the ischium * Inferior ramus of the ischium … Wikipedia
Superior ramus of the ischium — Infobox Bone Name = Superior ramus of the ischium Latin = ramus superior ossis ischii GraySubject = 57 GrayPage = 235 Caption = Right hip bone. External surface. Caption2 = System = MeshName = MeshNumber = DorlandsPre = r 02 DorlandsSuf =… … Wikipedia
Inferior ramus — can refer to: * Inferior ramus of the ischium * Inferior pubic ramus … Wikipedia
Inferior pubic ramus — Infobox Bone Name = Inferior pubic ramus Latin = ramus inferior ossis pubis GraySubject = 57 GrayPage = 237 Caption = Right hip bone. External surface. (Inferior ramus of pubis labeled at bottom right.) Caption2 = Pelvis. Inferior ramus is 4c.… … Wikipedia
Ischium — Infobox Bone Name = Ischium of pelvis Latin = os ischii GraySubject = 57 GrayPage = 234 Caption = Pelvic girdle Caption2 = Left hip joint, opened by removing the floor of the acetabulum from within the pelvis. (Ischium labeled at bottom left.)… … Wikipedia
ischium — The lower and posterior part of the hip bone, distinct at birth but later becoming fused with the ilium and pubis; it consists of a body, where it joins the ilium and superior ramus of the pubis to form the … Medical dictionary
Ramus — In anatomy, a branch, such as a branch of a blood vessel or nerve. For example, the ramus acetabularis arteriae circumflexae femoris medialis is the branch of an artery that goes to the socket of the hip joint. The plural of ramus is rami. * * *… … Medical dictionary
ramus ossis ischii — [TA] ramus of ischium: the flattened bar of bone that projects from the inferior end of the body of the ischium in an anterosuperomedial direction to meet the inferior ramus of the pubis. It forms part of the border of the obturator foramen. See… … Medical dictionary
ramus inferior ossis pubis — [TA] inferior ramus of pubic bone: the short flattened bar of bone that projects from the body of the pubic bone in a posteroinferolateral direction to meet the ramus of the ischium. See illustration at ramus ossis ischii … Medical dictionary
Ischiopubic ramus — Infobox Bone Name = Ischiopubic ramus Latin = ramus ischiopubicus GraySubject = GrayPage = Caption = Pelvis. Ischiopubic ramus is region between 3 and 4c . Caption2 = Right hip bone. External surface. System = MeshName = MeshNumber = DorlandsPre … Wikipedia
