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17 hours ago · Function. The facial nerve (cranial nerve VII) is a mixed nerve with motor, sensory, and parasympathetic functions. It is responsible for controlling the muscles of facial expression, providing taste sensation to the anterior two-thirds of the tongue, and innervating several glands involved in tear and saliva production.
Jun 23, 2024 · The facial nerve, CN VII, is the seventh paired cranial nerve. In this article, we shall look at the anatomical course of the nerve, and the motor, sensory and parasympathetic functions of its terminal branches.
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- Facial Nerve Parasympathetic Functions
- Facial Nerve Sensory Functions
- Facial Nerve Motor Branches
The parasympathetic nerve fibers of your facial nerves control the salivary glands in your mouth and the lacrimal glands in the corners of your eyes. They trigger your salivary glands to release saliva(spit) and your lacrimal glands to release tears.
The sensory nerve fibers of your facial nerve play a key role in hearing. They provide innervation to your ear canal, tympanic membrane (eardrum) and outer ear (pinna). They also carry taste sensations from the front (anterior) two-thirds of your tongue.
Your facial nerve has five branches that have distinct motor (movement) functions: 1. Frontal (temporal) branch: Controls your forehead muscles. 2. Zygomatic branch: Helps you close your eyes. 3. Buccal branch: Allows you to move your nose and blink. It also makes it possible to raise your upper lip and the corners of your mouth to make a smile. 4....
Oct 30, 2023 · The seventh cranial nerve (CN VII), the facial nerve, is responsible for providing motor innervation to these facial muscles, enabling you to smile or frown. In addition to motor fibers, this multitasking nerve also contains sensory and parasympathetic components.
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The facial nerve, also known as the seventh cranial nerve, cranial nerve VII, or simply CN VII, is a cranial nerve that emerges from the pons of the brainstem, controls the muscles of facial expression, and functions in the conveyance of taste sensations from the anterior two-thirds of the tongue.
Jan 23, 2018 · The facial nerve is also known as the seventh cranial nerve (CN7). This nerve performs two major functions. It conveys some sensory information from the tongue and the interior of the mouth....
Apr 11, 2019 · Cranial nerve VII is the facial nerve. It supplies motor, sensory and parasympathetic innervation to various structures of the head and neck. In this article, we discuss the embryology, structure and course of the facial nerve and the brainstem nuclei associated with it. Check out our summary of the cranial nerves here.
