PSI Barbering Practice Exam 2025 – All-in-One Resource to Master Your Certification!

The maxillary nerve is a branch of the trigeminal nerve (cranial nerve V) and is responsible for providing sensory innervation to the upper part of the face, including the forehead, upper eyelids, cheeks, and the nasal cavity. This nerve carries sensory impulses that inform the brain about sensations such as touch, pain, and temperature in its designated area.

Understanding the role of the maxillary nerve is essential for barbers, particularly in how it relates to facial treatments and the response to various techniques used during grooming services. The other nerves mentioned do not supply the upper part of the face; for instance, the mandibular nerve mainly covers the lower jaw region, the occipital nerve serves the back of the head, and the cervical nerve is primarily involved with the neck and lower head regions. This knowledge assists barbers in offering safe and effective services while being aware of the nerve location and function in the facial area.