Abstract
This study was carried out to investigate the structure of sensory nerve endings and SP (Substance P) nerve fibers of the canine laryngeal mucosa by means of silver impregnation and immunohistochemical techniques (PAP methods) with light microscopy and to discuss their relationship to the physiological function of the larynx.The results are summarized as follows; 1. Free nerve endings, corpuscular endings and taste bud-like structures were observed. 2. Endings were composed of thin and thick nerve fibers. 3. SP was observed in nerve endings. 4. SP fibers were found to be related to the submucosal glands and blood vessels. 5. SP fibers may be associated with reflex, secretory and circulatory regulation of the larynx.
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