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Related Concept Videos

Cranial Nerves: Overview and Anatomy01:19

Cranial Nerves: Overview and Anatomy

The cranial nerves are an important part of the complex network of nerves in the human body. These nerves emerge directly from the brain and are responsible for transmitting essential information between the brain and various parts of the head and neck. There are 12 pairs of cranial nerves, systematically numbered using Roman numerals from I to XII, beginning from the anterior and moving to the posterior of the brain. Each cranial nerve is uniquely identified by names that reflect its function...
Cranial Nerves: Types Part II01:22

Cranial Nerves: Types Part II

Cranial nerves are responsible for transmitting motor and sensory information between the brain and various parts of the body. There are twelve pairs of cranial nerves. While the first six innervate the head and neck, the latter six nerves innervate the head and neck, as well as organs and tissues in the thoracic and abdominal cavities. They facilitate communication, expression, and autonomic control within the human body.
Facial Nerve (Cranial Nerve VII)
Cranial nerve VII, or the facial nerve,...
Cranial Nerves: Types Part I01:14

Cranial Nerves: Types Part I

Cranial nerves are responsible for transmitting motor and sensory information between the brain and various parts of the body. There are twelve pairs of cranial nerves, with the first six being essential in sensory perception, motor control, and autonomic functions related to the head and neck.
Olfactory Nerve (Cranial Nerve I)
The olfactory nerve, or cranial nerve I, is unique as it is purely sensory and dedicated to the sense of smell. This nerve originates in the olfactory epithelium of the...
Olfactory Receptors: Location and Structure01:03

Olfactory Receptors: Location and Structure

The process of olfaction, also known as the sense of smell, is a sophisticated chemical response system. The specialized sensory neurons that facilitate this process, known as olfactory receptor neurons, are situated in an upper segment of the nasal cavity, known as the olfactory epithelium. Olfactory sensory neurons are bipolar, with their dendrites extending from the epithelium's apex into the mucus that lines the nasal cavity. Airborne molecules, when inhaled, traverse the olfactory...
Muscles for Facial Expressions01:14

Muscles for Facial Expressions

The craniofacial muscles are a collection of approximately 20 thin skeletal muscles situated beneath the skin of the face and scalp. These muscles, primarily responsible for the vast array of human facial expressions, originate from the bones or fibrous structures of the skull and extend outwards to connect with the skin. While most skeletal muscles in the body are enveloped in thick fascia, facial muscles generally have a more delicate fascial covering, with the buccinator muscle being a...
Cranial Part of Parasympathetic Division01:18

Cranial Part of Parasympathetic Division

The cranial part of the parasympathetic division plays a crucial role in regulating the visceral functions of the head and specific structures in the neck, thoracic, and abdominopelvic cavities. Preganglionic fibers of the parasympathetic division exit the brain through cranial nerves III (oculomotor), VII (facial), IX (glossopharyngeal), and X (vagus), delivering parasympathetic output to the respective visceral structures.
The vagus nerve (cranial nerve X) alone accounts for approximately 75...

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Related Experiment Video

Updated: May 9, 2026

Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer
19:53

Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer

Published on: March 1, 2015

Facial nerve: from anatomy to pathology.

F Toulgoat1, J L Sarrazin, F Benoudiba

  • 1Neuroradiologie diagnostique et interventionnelle, Hôpital Laennec, CHU de Nantes, boulevard Jacques-Monod - Saint-Herblain, 44093 Nantes cedex 1, France.

Diagnostic and Interventional Imaging
|July 30, 2013
PubMed
Summary

The facial nerve (CN VII) originates in the pons and travels through complex pathways, including the petrous bone. Lesions can affect CN VII and CN VIII, with Bell

Keywords:
Cranial nervesFacial nerve (CN VII)Pathology

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Facial Nerve Surgery in the Rat Model to Study Axonal Inhibition and Regeneration
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Facial Nerve Surgery in the Rat Model to Study Axonal Inhibition and Regeneration

Published on: May 5, 2020

Related Experiment Videos

Last Updated: May 9, 2026

Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer
19:53

Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer

Published on: March 1, 2015

Facial Nerve Surgery in the Rat Model to Study Axonal Inhibition and Regeneration
05:04

Facial Nerve Surgery in the Rat Model to Study Axonal Inhibition and Regeneration

Published on: May 5, 2020

Area of Science:

  • Neuroscience
  • Anatomy
  • Neurology

Background:

  • The facial nerve (CN VII) originates in the pons and has a complex anatomical course.
  • It travels with the vestibulocochlear nerve (CN VIII) through the cisternal and internal auditory meatus pathways.
  • The nerve traverses the petrous bone via labyrinthine, tympanic, and mastoid segments before exiting at the stylomastoid foramen.

Purpose of the Study:

  • To outline the anatomical course and key pathways of the facial nerve (CN VII).
  • To describe the clinical implications of lesions affecting the facial nerve.
  • To differentiate between central and peripheral facial nerve impairments.

Main Methods:

  • Anatomical review of the facial nerve (CN VII) pathway.
  • Discussion of neurological deficits associated with facial nerve lesions.
  • Clinical correlation of pontine, cerebellopontine angle, and peripheral facial nerve impairments.

Main Results:

  • Pontine lesions of the facial nerve (CN VII) typically present with additional neurological symptoms.
  • Cerebellopontine angle tumors (e.g., meningioma, schwannoma) primarily affect CN VIII, with secondary involvement of CN VII.
  • Peripheral facial nerve impairment, excluding trauma, is most commonly attributed to Bell's palsy.

Conclusions:

  • Understanding the facial nerve's (CN VII) intricate anatomy is crucial for diagnosing neurological disorders.
  • Lesion location dictates the pattern of cranial nerve involvement, with cerebellopontine angle and pontine lesions having distinct presentations.
  • Bell's palsy remains the most frequent cause of isolated peripheral facial nerve dysfunction.