pelvis
The pelvis (plural pelves or pelvises) is the lower part of the trunk, between the abdomen and the thighs (sometimes also called pelvic region), together with its embedded skeleton (sometimes also called bony pelvis, or pelvic skeleton).
The ...
through which nerves and blood vessels pass.
Structure
It is bounded by a thin, uneven margin, to which a strong membrane is attached, and presents, superiorly, a deep groove, the obturator groove, which runs from the pelvis obliquely medialward and downward.
This groove is converted into the obturator canal by a ligamentous band, a specialized part of the obturator membrane, attached to two tubercles:
* one, the posterior obturator tubercle, on the medial border of the ischium, just in front of the acetabular notch
* the other, the anterior obturator tubercle, on the
obturator crest
The anterior border of the superior pubic ramus presents a sharp margin, the obturator crest, which forms part of the circumference of the obturator foramen superiorly and affords attachment to the obturator membrane.
The obturator crest extends f ...
sex differences
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most ani ...
between male and female pelvises, the obturator foramina are oval in the male and wider and more triangular in the female.
Additionally, unilateral pelvis
hypoplasia
Hypoplasia (from Ancient Greek ὑπo- ''hypo-'' 'under' + πλάσις ''plasis'' 'formation'; adjective form ''hypoplastic'') is underdevelopment or incomplete development of a tissue or organ.obturator artery, obturator vein and
obturator nerve
The obturator nerve in human anatomy arises from the ventral divisions of the second, third, and fourth lumbar nerves in the lumbar plexus; the branch from the third is the largest, while that from the second is often very small.
Structure
The ob ...
Pelvic girdle illustration.svg, The two circles at the bottom are the obturator foramina.
Gray541.png, Variations in origin and course of obturator artery.
Gray547.png, The relations of the femoral and abdominal inguinal rings, seen from within the abdomen. Right side.
Slide3ADA.JPG, Anterior view of the body pelvis
References
External links
* - "Major Joints of the Lower Extremity: hip and sacrum (anterior view)"
* - "Pelvis & Perineum: Male Urethrogram"
Photo at vc.cc.tx.us
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Bones of the pelvis