Which structure is a basin-shaped cavity of the body formed by several bones that forms the lower part of the abdomen?

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Multiple Choice

Which structure is a basin-shaped cavity of the body formed by several bones that forms the lower part of the abdomen?

Explanation:
The pelvis is a basin-shaped ring of bone that forms the lower part of the trunk. It is created by the sacrum and coccyx at the back and the two hip bones on the sides, each hip bone itself made from the fusion of the ilium, ischium, and pubis. This arrangement forms the pelvic cavity, which defines the lower abdomen region and supports abdominal organs. The ribs and sternum belong to the chest wall, not the lower abdomen, and a single hip bone alone doesn’t create the basin shape—the pelvis as a whole does.

The pelvis is a basin-shaped ring of bone that forms the lower part of the trunk. It is created by the sacrum and coccyx at the back and the two hip bones on the sides, each hip bone itself made from the fusion of the ilium, ischium, and pubis. This arrangement forms the pelvic cavity, which defines the lower abdomen region and supports abdominal organs. The ribs and sternum belong to the chest wall, not the lower abdomen, and a single hip bone alone doesn’t create the basin shape—the pelvis as a whole does.

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