HOSA Dental Terminology Practice

Which cranial nerve is known as the trigeminal nerve?

1. 4th cranial nerve

2. 5th cranial nerve

3. 7th cranial nerve

4. 10th cranial nerve

The correct answer is: 5th cranial nerve

The trigeminal nerve is identified as the fifth cranial nerve. It plays a crucial role in both sensory and motor functions. This nerve is responsible for sensation in the face and motor functions such as biting and chewing. It is divided into three major branches: the ophthalmic, maxillary, and mandibular nerves, each serving different regions of the face. Understanding the role of the trigeminal nerve is important in dentistry, as it innervates the teeth and gums, making it essential in procedures involving pain management and anesthesia. The other options correspond to different cranial nerves that serve distinct functions, but none are associated with the sensory and motor functions attributed to the trigeminal nerve.