Human Skeleton: Thoracic Cage and Pelvic Girdle
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Questions and Answers

What is the primary function of the sacrum?

  • To support the pectoral girdle and upper limbs
  • To transmit body weight to the lower limbs (correct)
  • To transmit body weight to the upper limbs
  • To support the skull and thoracic cage
  • Through which vertebrae does the vertebral artery pass?

  • C1 to 7
  • C2 to 5
  • C3 to 4
  • C1 to 6 (correct)
  • What is the shape of the sacrum?

  • Rectangular
  • Convex anteriorly
  • wedge-shaped (correct)
  • Triangular
  • What forms the sacral canal?

    <p>The vertebral foramina</p> Signup and view all the answers

    What is the sacral hiatus formed by?

    <p>The failure of the laminae of the 5th and 4th sacral vertebrae to meet in the midline</p> Signup and view all the answers

    What is the sacrum fused with at its upper border?

    <p>The 5th lumbar vertebra</p> Signup and view all the answers

    Which bones do the sacrum articulate with laterally to form joints?

    <p>The iliac bones</p> Signup and view all the answers

    What is the usual fusion state of the first coccygeal vertebra with the second vertebra?

    <p>Incompletely fused</p> Signup and view all the answers

    What is the orientation of the sacrum?

    <p>Concave anteriorly</p> Signup and view all the answers

    What is the articulation site of the sacrum with the coccyx?

    <p>The narrow inferior border</p> Signup and view all the answers

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