D

Trigeminal (V), facial (VII) and glossopharyngeal (IX) nerves all carry muscle-spindle afferents whose cell bodies lie in (or project to) the mesencephalic trigeminal nucleus, providing proprioceptive feedback from muscles of mastication, facial expression and the stylopharyngeus/pharynx [Arends, 1982, PMID 7130459]. The accessory nerve (XI) is almost exclusively motor; proprioceptive input from sternocleidomastoid and trapezius is conveyed instead by cervical spinal nerves C2–C4, not within CN XI itself [Kim, 2024, PMID 39448752].