QuestionSBA
QuestionChoice
The alae of the sacrum are the wing-like lateral extensions on either side of the sacral base. They form part of the sacroiliac joint by articulating with the iliac bones of the pelvis. They contribute to the stability of the pelvic girdle and support the transfer of body weight to the lower limbs.
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Ala of sacrum
QuestionChoice
The body of the sacrum is its central, largest part and forms the base of the vertebral column. It contains four pairs of sacral foramina (anterior and posterior) on each side, which allow the passage of sacral nerves and blood vessels.
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Body of sacrum
QuestionChoice
The coccyx, or tailbone, is the most inferior part of the vertebral column. While separate from the sacrum, it articulates with the sacrum at the sacrococcygeal joint. The coccyx provides attachment points for ligaments and muscles that support pelvic floor structures.
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Coccyx
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The sacral promontory is the prominent, anteriorly projecting uppermost part of the sacrum. It marks the transition between the lumbar spine and the sacrum by articulating with the L5 vertebra.
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Sacral promontory
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The sacral cornu are small bony projections located on the posterior surface of the sacrum at its most distal end, adjacent to the sacral hiatus. These structures serve as landmarks for the sacrococcygeal junction and provide attachment points for ligaments connecting the sacrum to the coccyx.
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Sacral cornu
Concept
Chapter
2693
6264
Sacrum
Topic
308
Pelvic anatomy
20474
Picture
3073
28 - Sacrum (body).png
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Topic
308
Pelvic anatomy
Identify the feature of the bone labelled
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a