Unlock the World of Gross Anatomy with Our Comprehensive Notes:
- Embark on a journey through the intricacies of human pelvis anatomy with our meticulously crafted notes.
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Triangular-shaped bone
Location: base vertebral column
Forms post wall of pelvic cavity
5 fused sacral vertebrae
Rough post + smooth ant
Ant parts
Base - articulates sup with L5 + associated IVDs
Apex - articulates inf with coccyx
Sacral promontory - ant projection that occurs sup + forms post margin of pelvic
inlet
Ala of sacrum - large triangular surface on either side of sacral base, cont with
iliac fossa
Transverse lines - remnants of fused sacral IVDs
,Post parts
Median sacral crest - formed by fusion of SPs of individual sacral vertebrae
Intermediate sacral crests - formed by fusion of sacral articular processes of
individual sacral vertebrae
Lat sacral crests - formed by fusion of TVPs of individual sacral vertebrae
Auricular surfaces - ear-shaped articular surfaces located lat on sacrum
Boundaries Of Pelvis
Pelvic inlet / pelvic brim / sup pelvic aperture
(boundary between greater and lesser pelvis or entry into pelvic cavity)
Boundaries include
, Sacral promontory
Ala of sacrum
Arcuate line of ilium
Pectineal line + sup pubic ramus + pubic crest
Sup border of pubic symphysis
Pelvic outlet / inf pelvic aperture
(boundary between lesser pelvis + perineum or exit of pelvic cavity)
Boundaries include
Pubic arch ant
Ischial tuberosities lat
Sacro tuberous ligament
Coccyx
Sexual Differences of Pelvis
Male
General structure - thick + heavy
Greater pelvis - deep
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