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Related Concept Videos

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.
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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...
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A thorough assessment of respiratory health is paramount in clinical settings to identify and manage respiratory distress and ensure adequate oxygenation. This article elaborates on the critical aspects of respiratory evaluation, including airway assessment, skin color examination, and the observation of accessory muscle use, which are integral to effectively diagnosing and managing patients with respiratory conditions.
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Graded Potential

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Related Experiment Video

Updated: Jun 24, 2026

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

Facial Nerve Grading System 2.0.

Jeffrey T Vrabec1, Douglas D Backous, Hamid R Djalilian

  • 1Bobby R Alford Department of Otolaryngology, Head and Neck Surgery, Baylor College of Medicine, Houston, TX 77030, USA. jvrabec@bcm.tmc.edu

Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery
|March 31, 2009
PubMed
Summary
This summary is machine-generated.

The updated Facial Nerve Grading Scale (FNGS 2.0) maintains high agreement for assessing facial paralysis. This revised scale improves clarity and regional scoring, enhancing diagnostic accuracy.

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Facial Nerve Surgery in the Rat Model to Study Axonal Inhibition and Regeneration
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Published on: February 23, 2015

Area of Science:

  • Neurology
  • Otolaryngology
  • Plastic Surgery

Background:

  • The original Facial Nerve Grading Scale (FNGS), known as the House-Brackmann scale, is widely used for facial paralysis assessment.
  • Previous versions have limitations in differentiating certain grades and addressing ambiguities.

Purpose of the Study:

  • To introduce and validate an updated version of the FNGS, termed FNGS 2.0.
  • To enhance the scale's reliability and clinical utility in evaluating facial nerve function.

Main Methods:

  • A controlled trial was conducted using 21 videos showcasing individuals with diverse facial paralysis.
  • The grading system's performance was evaluated through intraobserver and interobserver agreement assessments.

Main Results:

  • FNGS 2.0 demonstrated high intraobserver and interobserver agreement, comparable to the original scale.
  • The revised scale showed nominal improvement in exact grade agreement and reduced instances of significant grade discrepancies.
  • FNGS 2.0 improved differentiation between grades 3 and 4 facial paralysis.

Conclusions:

  • FNGS 2.0 offers enhanced regional scoring of facial movement, providing supplementary diagnostic information.
  • The updated scale addresses previous ambiguities, maintaining high agreement and improving clinical application for facial nerve grading.