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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 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: 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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The cranial and spinal meninges are complex protective structures surrounding the central nervous system (CNS), consisting of the brain and spinal cord. These meninges consist of the dura mater, the arachnoid mater, and the pia mater. They protect the CNS, provide structural support, and aid in circulating cerebrospinal fluid (CSF).
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Cranial Bones: Lateral View01:27

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The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
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Cranial Bones: Superior and Posterior View01:14

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The superior view of the cranium shows the frontal and paired parietal bones.
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Related Experiment Video

Updated: Apr 15, 2026

In Vivo Morphometric Analysis of Human Cranial Nerves Using Magnetic Resonance Imaging in Menière's Disease Ears and Normal Hearing Ears
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Cranial Nerve Abnormalities in Oculo-Auriculo-Vertebral Spectrum.

R Manara1, D Brotto2, S Ghiselli2

  • 1From Neuroradiology (R.Manara), University of Salerno, Salerno Italy rmanara@unisa.it.

AJNR. American Journal of Neuroradiology
|March 28, 2015
PubMed
Summary

Cranial nerve abnormalities are common in Goldenhar syndrome, a severe form of oculo-auriculo-vertebral spectrum. These abnormalities correlate with phenotype severity and can cause functional impairments like trigeminal and facial nerve dysfunction.

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Area of Science:

  • Neurology
  • Medical Imaging
  • Genetics

Background:

  • Oculo-auriculo-vertebral spectrum (OAVS), including hemifacial microsomia and microtia, can present with cranial nerve abnormalities.
  • The prevalence, characteristics, and functional impact of these abnormalities in OAVS remain incompletely understood.

Purpose of the Study:

  • To investigate cranial nerve anomalies (absence, asymmetry, abnormal origin, morphology, course) in OAVS patients.
  • To assess associated bone foramina abnormalities (foramen ovale, inferior alveolar nerve canal).
  • To correlate cranial nerve findings with phenotype severity and functional impairment.

Main Methods:

  • Brain MRI and CT scans were performed on 29 OAVS patients (mean age 7 years).
  • Neurologic evaluations were conducted for all participants.
  • Nineteen patients exhibited a more severe phenotype, identified as Goldenhar syndrome.

Main Results:

  • Cranial nerve abnormalities were identified in 17 of 19 Goldenhar syndrome patients, frequently bilateral.
  • Affected nerves included the trigeminal (V), facial (VII), and vestibulocochlear (VIII) nerves, among others.
  • Trigeminal nerve abnormalities correlated significantly with ipsilateral dysfunction, especially when bone foramina anomalies were present.

Conclusions:

  • Cranial nerve morphologic abnormalities are prevalent in OAVS, particularly in Goldenhar syndrome.
  • These abnormalities are associated with increased phenotype severity and functional deficits.
  • The spectrum of cranial nerve involvement extends beyond simple hypoplasia to include anomalous courses and nerve fusion.