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Related Concept Videos

Cranial Nerves: Types Part I01:14

Cranial Nerves: Types Part I

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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.
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Cranial Nerves: Overview and Anatomy01:19

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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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Cranial Nerves: Types Part II01:22

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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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Spinal Nerves: Plexus I01:22

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Nerve plexuses are networks of interlacing nerves that serve as communication hubs to distribute and organize nerve action across various body regions. The nerve plexuses are organized into the cervical plexus located in the neck region, brachial plexus in the shoulder area, lumbar plexus found in the lower back, sacral plexus situated in the pelvis, and coccygeal plexus located in the coccygeal region.
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Cranial Part of Parasympathetic Division01:18

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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.
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Muscles for Facial Expressions01:14

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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...
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Updated: May 6, 2026

Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer
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Understanding facial nerve paralysis.

Jaime Matthaeus1, Richard Hayden, Michael Kim

  • 1Jaime Matthaeus works in otolaryngology/head and neck surgery at the Mayo Clinic in Phoenix, Arizona. Richard Hayden is chair of otolaryngology/head and neck surgery at the Mayo Clinic in Phoenix and a professor of otolaryngology at the Mayo Clinic College of Medicine in Phoenix. Michael Kim is a facial plastic and reconstructive surgeon at Oregon Health and Science University in Portland, Oregon. Carrlene Donald works in otolaryngology/head and neck surgery at the Mayo Clinic in Phoenix. The authors have indicated no relationships to disclose relating to the content of this article.

JAAPA : Official Journal of the American Academy of Physician Assistants
|October 25, 2013
PubMed
Summary
This summary is machine-generated.

Facial nerve paralysis, acute or chronic, stems from various causes. Prompt evaluation and diagnostic tests are key for effective clinical management and better patient outcomes.

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Area of Science:

  • Neurology
  • Otolaryngology

Background:

  • Facial nerve paralysis presents with diverse etiologies and temporal patterns, ranging from acute to chronic presentations.
  • Accurate diagnosis is crucial for effective management of facial nerve dysfunction.

Purpose of the Study:

  • To outline the essential components of evaluating patients with facial nerve paralysis.
  • To emphasize the role of diagnostic testing in guiding clinical decisions for facial nerve disorders.

Main Methods:

  • Review of clinical presentation and diagnostic approaches for facial nerve paralysis.
  • Discussion of etiological factors contributing to facial paralysis.

Main Results:

  • Facial nerve paralysis can be idiopathic, infectious, neoplastic, traumatic, or autoimmune.
  • Clinical signs and symptoms vary based on the underlying cause and location of the nerve lesion.

Conclusions:

  • A systematic approach to patient evaluation, including thorough history and physical examination, is fundamental.
  • Appropriate diagnostic testing aids in identifying the cause of facial nerve paralysis, thereby optimizing treatment strategies and patient prognosis.