Question

Which cranial nerve provides motor innervation to the muscles of mastication?

1) Facial nerve (VII)
2) Glossopharyngeal nerve (IX)
3) Vagus nerve (X)
4) Mandibular branch of trigeminal (V3)

Answer 1

The mandibular branch of the trigeminal nerve (V3) provides motor innervation to the muscles of mastication.

Step-by-step explanation:

The cranial nerve that provides motor innervation to the muscles of mastication is the Mandibular branch of trigeminal (V3). The trigeminal nerve controls the muscles of chewing and is responsible for motor functions related to facial expressions and mastication. The mandibular branch of the trigeminal nerve innervates the muscles involved in jaw movement and chewing.