Lateral part of middle cranial fossa and posterior cranial fossa are divided by ______________?

Correct answer: A. Petrous temporal bone

  • A. Petrous temporal bone
  • B. Croista galli
  • C. Transverse groove
  • D. Sphenoid bone

Explanation

The petrous part of the temporal bone forms a strong ridge separating the middle cranial fossa from the posterior cranial fossa. The crista galli and sphenoid belong to more anterior cranial-floor boundaries.

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