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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