NCLEX-PN

●​ O lfactory Nerve (Sensory): The olfactory nerve is responsible for transmitting the sense of smell from the olfactory foramina of the nose. It plays a key role in our ability to detect and distinguish various odors. ●​ O ptic Nerve (Sensory): The optic nerve is involved in transmitting visual information from the retina to the brain. It enables us to perceive and interpret visual stimuli. ●​ O culomotor Nerve (Motor): The oculomotor nerve controls several important functions, including eye movements, constriction of the pupils (pupillary sphincter), and adjustments of the ciliary body muscles to focus the lens of the eye. ●​ T rochlear Nerve (Motor): The trochlear nerve is responsible for innervating the superior oblique muscle of the eye, which contributes to eye movement and helps maintain proper alignment. ●​ T rigeminal Nerve (Motor and Sensory): The trigeminal nerve serves a dual role, controlling both sensory and motor functions. It's involved in controlling the muscles used for chewing (motor) and providing sensation to the face (sensory). ●​ A bducens Nerve (Motor): The abducens nerve plays a role in eye movement by controlling the abduction of the eye using the lateral rectus muscle. This movement allows the eye to move outward. ●​ F acial Nerve (Motor and Sensory): The facial nerve has both motor and sensory functions. It controls facial movements, including expressions, and also plays a role in taste sensation from the anterior part of the tongue. ●​ A coustic Nerve (Sensory): Also known as the vestibulocochlear nerve, the acoustic nerve is responsible for transmitting auditory (hearing) and vestibular (balance and equilibrium) information. ●​ G lossopharyngeal Nerve (Motor and Sensory): The glossopharyngeal nerve is involved in sensory functions related to taste from the posterior part of the tongue. Additionally, it innervates the parotid glands, which are salivary glands located near the ears. ●​ V agus Nerve (Motor and Sensory): The vagus nerve plays a significant role in various functions, including controlling laryngeal and pharyngeal muscles, regulating the parasympathetic nervous system for thoracic and abdominal organs, and influencing voice resonance. It also affects swallowing and can impact vocal quality. ●​ Spinal A ccessory Nerve (Motor): The spinal accessory nerve is responsible for controlling the trapezius and sternocleidomastoid muscles, contributing to movements of the head, neck, and shoulders. ●​ H ypoglossal Nerve (Motor): The hypoglossal nerve is crucial for controlling the tongue's movements, which are vital for speech and swallowing.

188

© 2025 ACHIEVE ULTIMATE CREDIT-BY-EXAM GUIDE | NCLEX-PN ​

​

​

​

​