INBDE (Integrated National Board Dental Examination) Practice Exam

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Through which foramen does V3 exit?

Foramen ovale
Foramen spinosum
Foramen rotundum
Stylomastoid foramen

The correct answer is: Foramen ovale

V3, which is the mandibular division of the trigeminal nerve, exits through the foramen ovale. The foramen ovale is a large oval opening in the base of the skull, located behind the foramen rotundum and medial to the foramen spinosum. This foramen allows the passage of the mandibular nerve (V3), as well as the accessory meningeal artery and emissary vein. Options B, C, and D are incorrect: - Foramen spinosum is located posterior to the foramen ovale and transmits the middle meningeal artery. - Foramen rotundum is located posterior to the superior orbital fissure and transmits the maxillary division of the trigeminal nerve (V2). - Stylomastoid foramen is located between the styloid and mastoid processes of the temporal bone and transmits the facial nerve (VII).