Question

Paralysis of jaw muscles is due to loss of function of which cranial nerve?

• A. III
• B. V
• C. VII
• D. X

Answer 1

The correct option is B V

The cranial nerve-V or the trigeminal nerve is also called the Dentist's nerve. It is a mixed nerve because the branches of this neuron are both sensory and motor in function. It arises from the pons region of the brainstem. It supplies to the nose, upper eyelids, forehead, scalp, lower jaw, lower lip etc. The loss of function of the mandibular branch of the trigeminal nerve is responsible for the paralysis of the jaw muscle.

Hence, the correct answer is 'V'