Physiology & Biochemistry · single question

Which branch related to the mandibular division (V3) of the trigeminal nerve provides MOTOR supply within the infratemporal fossa?

  1. Auriculotemporal nerve (sensory)
  2. Buccal nerve (sensory)
  3. Lingual nerve (sensory)
  4. Masseteric nerve (motor)
Show answer and explanation

Correct answer: D. Masseteric nerve (motor)

This question (as written in the source material) only offered sensory branches of V3 as choices — the auriculotemporal, buccal, and lingual nerves are all purely SENSORY branches. The actual motor branches of V3 within the infratemporal fossa are the masseteric nerve, the deep temporal nerves, and the nerves to the medial and lateral pterygoids — we've added the masseteric nerve as the correct 4th option here, since none of the three originally listed choices are actually motor branches.

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