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Terminal nerve complex
1New College of the University of South Florida, Division of Natural Sciences, Sarasota 34243-2197.
Acta Anatomica
|January 1, 1993
Summary
The terminal nerve (TN) is a cranial nerve found in most vertebrates, connecting the forebrain to nasal structures. Its sensory, vascular, and reproductive functions are still being explored.
Area of Science:
- Neuroscience
- Comparative Anatomy
- Developmental Biology
Background:
- The terminal nerve (nervus terminalis: TN) is a poorly understood cranial nerve.
- It originates from olfactory placodes and links anterior forebrain to nasal and olfactory structures.
- The TN is present in most vertebrates, excluding hagfish.
Observation:
- Phylogenetic variations in TN components are detailed.
- The TN's precise functions remain largely unidentified.
- Evidence suggests sensory (non-chemosensory), vascular, and glandular roles in the nose.
Findings:
- The TN contains peptide-fibers implicated in reproductive development and behavior.
- It may influence other neural functions beyond its direct sensory roles.
- The paper reviews TN history, recent studies, and proposes future research directions.
Implications:
- Understanding the TN's multifaceted roles is crucial for advancing neuroscience.
- Further research can elucidate its contribution to sensory processing and neuroendocrinology.
- The TN represents a key area for future investigation in vertebrate neurobiology.