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Questions and Answers
What is the anatomical location of the pelvic region?
What defines the upper border of the bony true pelvis?
What separates the true pelvis from the perineum?
Which part of the pelvic region is subdivided into an anterior urogenital triangle and a posterior anal triangle?
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What divides the urogenital triangle into two small spaces, an upper deep space and a lower superficial space?
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What structures form the bony pelvis?
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Where does the true pelvis lie?
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What occupies the subperitoneal space in the pelvic cavity?
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What forms the pelvic outlet?
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What are the ischioanal fossae?
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Study Notes
Pelvic Region Anatomy
- The pelvic region is located below the abdomen and between the hips.
True Pelvis
- The upper border of the bony true pelvis is defined by the iliopectineal line.
- The true pelvis lies below the pelvic brim (the iliopectineal line).
- The pelvic diaphragm separates the true pelvis from the perineum.
Perineum
- The perineum is subdivided into an anterior urogenital triangle and a posterior anal triangle.
Urogenital Triangle
- The urogenital triangle is divided into two spaces by the perineal membrane: an upper deep space and a lower superficial space.
Bony Pelvis
- The bony pelvis is formed by four bones: two hip bones, the sacrum, and the coccyx.
Pelvic Cavity
- The true pelvis lies in the pelvic cavity.
- The subperitoneal space in the pelvic cavity is occupied by loose connective tissue.
Pelvic Outlet
- The pelvic outlet is formed by the coccyx, ischial tuberosities, and the inferior rami of the pubic bones.
Ischioanal Fossae
- Ischioanal fossae are fat-filled spaces located between the pelvic diaphragm and the perineal membrane on each side of the anal canal.
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Description
Test your knowledge of the general features, pelvic brim, pelvic inlet and outlet, pelvic diaphragm, urogenital triangle, anal triangle, perineal membrane, bony pelvic hip bone, ligaments, and pelvic wall and floor in the pelvic and perineal regions.
