Question

The mandibular nerve is the branch of which cranial nerve?
A. II
B. III
C. V
D. VI.

Answer 1

The mandibular division of the trigeminal nerve, also referred to as the mandibular nerve, trigeminal nerve is also the largest cranial nerve.

Complete answer:
To answer this question, first, we need to know about the mandibular nerve. The mandibular nerve is the third division of V cranial nerve and which is the third division of the trigeminal nerve, a kind of mixed nerve made up of somatic afferent (sensory) fibers and general somatic efferent (motor).
The mandibular nerve provides the auricula, the lower part of the face, the skin of the temporal region, lower lip, the teeth and gums of the mandible, and the muscles of chewing; it also provides the mucous membrane of the anterior of the tongue.
Now, let us find the solution from the option.
The mandibular nerve (V-3) is the largest of the three branches or divisions of the trigeminal nerve, the fifth (V) cranial nerve.

Thus, the correct option is C. i.e. V.

Note: Mandibular is the biggest of the three branches of the fifth, and is composed of two roots: a huge, sensory root traveling from the inferior angle of the semilunar ganglion, and a small motor root which is the motor part of the trigeminal, that go through below the ganglion, and together with the sensory root, just after its depart via the foramen ovale.