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Related Experiment Videos

Peripheral development of avian trigeminal nerves.

S Kuratani1, S Tanaka

  • 1Department of Anatomy, Medical College of Georgia, Augusta 30912-2000.

The American Journal of Anatomy
|January 1, 1990
PubMed
Summary

This study details trigeminal nerve development in chick embryos, revealing transient ectopic ganglia and a

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Area of Science:

  • Developmental biology
  • Neuroscience
  • Embryology

Background:

  • The trigeminal nerve is crucial for facial sensation and motor function.
  • Understanding its early development provides insights into cranial nerve formation.

Purpose of the Study:

  • To investigate the developmental process of trigeminal nerve branches in early chick embryos.
  • To characterize the origin and organization of trigeminal nerve fibers during embryonic development.

Main Methods:

  • Chick embryos at developmental stages -17 to -27 were used.
  • Immunohistochemistry with neurofilament protein antibody was employed for visualization.

Main Results:

  • Transient ectopic ganglia were observed in the supraorbital ectoderm.
  • Cutaneous sensory branches originated from a 'maxillomandibular reticulum' of neurites.
  • Trigeminal branch growth correlated with facial process development, with early plasticity in organization.

Conclusions:

  • Early trigeminal nerve development involves transient structures and a dynamic organization.
  • Observations suggest potential homology between avian transient dorsal rami and human tentorial nerves.

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