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Related Concept Videos

Cranial Nerves: Overview and Anatomy01:19

Cranial Nerves: Overview and Anatomy

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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 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.
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...
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Cranial Nerves: Types Part II01:22

Cranial Nerves: Types Part II

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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.
Facial Nerve (Cranial Nerve VII)
Cranial nerve VII, or the facial nerve,...
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Cranial Part of Parasympathetic Division01:18

Cranial Part of Parasympathetic Division

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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.
The vagus nerve (cranial nerve X) alone accounts for approximately 75...
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Cranial Bones: Lateral View01:27

Cranial Bones: Lateral View

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The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...
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Spinal Nerves: Anatomy01:23

Spinal Nerves: Anatomy

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Spinal nerves are pivotal conduits in the nervous system, bridging the central nervous system (CNS) with the peripheral nervous system (PNS). These nerves enable a complex communication network between the brain, spinal cord, and the rest of the body, facilitating sensory input, motor output, and autonomic functions.
There are 31 bilateral pairs of spinal nerves, each emerging from the spinal cord through the intervertebral foramina—openings between adjacent vertebrae. These nerves are...
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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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Lower cranial nerves.

Theodoros Soldatos1, Kiran Batra, Ari M Blitz

  • 1The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins Hospital, 601 North Caroline Street, Baltimore, MD 21287, USA.

Neuroimaging Clinics of North America
|November 12, 2013
PubMed
Summary
This summary is machine-generated.

This guide details imaging techniques for lower cranial neuropathies (cranial nerves 7-12). It enhances diagnostic accuracy by correlating anatomy, physiology, pathology, and clinical data with MRI findings.

Keywords:
AnatomyCranial nervesImaging assessmentMagnetic resonance imagingMagnetic resonance neurographyPathology

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Area of Science:

  • Neurology
  • Radiology
  • Anatomy

Background:

  • Cranial neuropathies necessitate integrated knowledge of nerve anatomy, physiology, and pathology.
  • Accurate diagnosis relies on tailored imaging examinations and precise interpretation of findings.

Purpose of the Study:

  • To provide essential clinical, anatomical, and radiological information for evaluating lower cranial nerves (7th-12th).
  • To serve as a guide for optimal high-resolution magnetic resonance imaging (MRI) techniques in diagnosing cranial neuropathy.

Main Methods:

  • Review of clinical, anatomical, and radiological features of lower cranial nerves.
  • Inclusion of high-resolution MRI examples to illustrate optimal imaging techniques.

Main Results:

  • Detailed information correlating clinical presentation with imaging findings for cranial nerves 7-12.
  • Demonstration of how specific MRI sequences and protocols aid in identifying abnormalities.

Conclusions:

  • Improved diagnostic capabilities for cranial neuropathies through a comprehensive understanding of imaging.
  • Enhanced ability to localize and interpret abnormalities affecting the lower cranial nerves using advanced MRI.