Question

Muscles is innervated by the third branch of the trigeminal nerve

Answer 1

The Trigeminal Nerve is the fifth of the Twelve Cranial Nerves. It consists of both afferent and efferent motoric and sensory fibers as well as proprioceptive, sympathetic and parasympathetic fibers that are divided into three main branches: the ophthalmic nerve, the maxillary nerve and the mandibular nerve. Together these branches innervate the three areas of the head. The word Afferent means toward the centre, as in from a peripheral area of a limb to the central nervous system. The word efferent is the opposite of afferent, meaning away from the centre and toward the periphery; when the stimulus is carried back to the brain from a peripheral area. The third division of the trigeminal nerve is the mandibular nerve. This division innervates the lower third of the face which includes the lower lip, the jaw, the preauricular area and the temporal area.