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Questions and Answers
What is the main function of the bony pelvis?
Which bones form the back wall of the bony pelvis?
How do the two hip bones articulate with each other?
In the correct orientation of the bony pelvis relative to the trunk, where should the front of the symphysis pubis and the anterior superior iliac spines lie?
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What forms the pelvic brim posteriorly?
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Which part of the bony pelvis faces upward and backward in the anatomic position?
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What forms part of the abdominal cavity and supports the abdominal contents?
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Which structure is bounded by the lumbar vertebrae, the iliac fossae & iliacus muscle, and the lower part of the anterior abdominal wall?
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What is the bony canal through which the child passes during birth?
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What forms the boundaries behind of the pelvic inlet?
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Which structure is bounded posteriorly by the coccyx, laterally by the ischial tuberosities, and anteriorly by the pubic arch?
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Which ligaments divide the sciatic notches into greater & lesser sciatic foramina?
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What forms part of the perimeter of the pelvic outlet and makes it diamond shaped?
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Which part of the pelvis has an inlet, an outlet & a cavity?
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What is bounded by the symphysis pubis, the iliopectineal lines, and the sacral promontory?
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Which part of the pelvis forms part of the abdominal cavity and supports the gravid uterus?
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Study Notes
Bony Pelvis
- The main function of the bony pelvis is to support the spine, protect the internal organs, and serve as an attachment site for muscles.
- The back wall of the bony pelvis is formed by the sacrum and the two auricular surfaces of the hip bones.
- The two hip bones articulate with each other at the symphysis pubis.
- In the correct orientation of the bony pelvis relative to the trunk, the front of the symphysis pubis and the anterior superior iliac spines should lie in the same horizontal plane.
- The pelvic brim is formed posteriorly by the sacral promontory.
- The sacral surface faces upward and backward in the anatomic position.
- The pelvic cavity forms part of the abdominal cavity and supports the abdominal contents.
- The pelvic cavity is bounded by the lumbar vertebrae, the iliac fossae, iliacus muscle, and the lower part of the anterior abdominal wall.
- The birth canal is the bony canal through which the child passes during birth.
- The boundaries behind the pelvic inlet are formed by the sacral promontory, the alae of the sacrum, and the posterior superior iliac spines.
- The perineum is bounded posteriorly by the coccyx, laterally by the ischial tuberosities, and anteriorly by the pubic arch.
- The sacrospinous and sacrotuberous ligaments divide the sciatic notches into greater and lesser sciatic foramina.
- The coccyx forms part of the perimeter of the pelvic outlet and makes it diamond-shaped.
- The pelvis has an inlet, an outlet, and a cavity.
- The pelvic inlet is bounded by the symphysis pubis, the iliopectineal lines, and the sacral promontory.
- The pelvic cavity forms part of the abdominal cavity and supports the gravid uterus.
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Description
This quiz covers the bony pelvis, its functions, and its role in supporting and protecting pelvic viscera, transmitting body weight, and providing muscle attachment. It also discusses the composition of the bony pelvis, which comprises four bones.
