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5.16 Pelvic Girdle

structures of the pelvic girdle

TermDefinition
coxal bones left and right hip bones, comprised of 3 smaller bones
sacrum lower portion of vertebral column (attached to L5), roughly triangular shaped, located medially to coxal bones
pelvic girdle comprised of the left & right coxal bones and the sacrum
pelvis comprised of left & right coxal bones, sacrum and coccyx
functions of pelvic girdle bearing weight & mechanical forces of all structures superior to it, protection of pelvic organs, blood cell production, mineral storage, muscle attachment site
ilium superior portion of coxal bone, rounded shape superiorly (like a wing), connects posteriorly to sacrum,
Ischium forms the most inferior portion of coxal bones, rounded inferiorly, this is the part you sit on
pubis forms the most anterior portion of the coxal bone. medially this forms the joint between the left & right coxal bones.
sacroiliac joint articulation between sacrum and ilium
greater sciatic notch indentation on ilium that allows blood vessels and sciatic nerve to pass from pelvis posteriorly into thigh
pubic symphysis anterior articulation between left & right coxal bones at pubis
obturator foramen opening formed by the pubis & ischium, allows passage of blood vessels and nerves into anterior thigh
acetabulum large socket formed by ilium, ischium and pubis that receives the head of femur
greater (false) pelvis measurement of the area medial to the flaring portions of the ilia
lesser (true) pelvis measurement of the area medial to the pelvic inlet
pelvic inlet area between the greater and lesser pelvis
pubic arch area inferior to the pubic symphysis
subpubic angle measurement of the angle on the inferior surface of the pubic symphysis
Created by: MrsCSciencetT
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