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Published on: March 18, 2013
The peripheral part of the hypoglossal nerve in human embryos at stage 14 (32 days)
1Department of Anatomy, K. Marcinkowski University School of Medical Sciences, Poznań.
Folia Morphologica
|January 1, 1995
Insights
The hypoglossal cord, originating from occipital myotomes, moves forward to form the tongue muscles. The hypoglossal nerve guides this development, enabling tongue formation and function.
Area of Science:
- Developmental biology
- Neuroscience
- Anatomy
Background:
- The tongue's musculature is crucial for functions like swallowing and speech.
- Understanding the embryonic origins of tongue muscles is key to developmental studies.
Purpose of the Study:
- To elucidate the developmental pathway of the hypoglossal cord and its contribution to tongue musculature.
- To describe the anatomical relationship between the hypoglossal nerve and the developing tongue.
Main Methods:
- Histological analysis of embryonic head structures.
- Tracing the migration patterns of occipital myotomes.
Main Results:
- The hypoglossal cord, derived from occipital myotomes, exhibits rostral migration towards the developing tongue.
- The hypoglossal nerve invades the hypoglossal cord, initiating muscle differentiation.
Conclusions:
- The hypoglossal cord is the progenitor of tongue muscles, guided by the hypoglossal nerve.
- This study clarifies a fundamental aspect of craniofacial and tongue development.
Abstract:
The hypoglossal cord which is formed from occipital myotomes migrates rostrally to the future tongue. The hypoglossal nerve enters the hypoglossal cord which gives rise to the muscle of the tongue.
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