The trigeminal nerve (CN V) exits the posterior cranial fossa via which opening?

The trigeminal nerve (CN V) exits the

Multiple choice — select the best answer

AInternal acoustic meatus
BMeckel's cave / petrous apex
CForamen ovale
DJugular foramen

✓ Correct answer: B. Meckel's cave / petrous apex CN V exits through the porus trigeminus into Meckel's cave at the petrous apex before its branches exit via foramina rotundum, ovale, and spinosum; the main root traverses the petrous apex dural cave.

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Topic: Cross-Sectional Anatomy

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The trigeminal nerve (CN V) exits the posterior cranial fossa via which opening?

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