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KMID : 0376219870240020175
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Chonnam Medical Journal
1987 Volume.24 No. 2 p.175 ~ p.179
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Unconditioned Reflex Secretion Rate of Principal Salivary Glands in Cats
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Abstract
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It is well known that salivary secretion is elicited mainly by neural mecha￢nism, although there is a small amount of spontaneous secretion without neural influence as a non-digestive function of keeping the mucosa of the mouth and throat moist. However, the amount of the reflex salivation has not been quantitatively studied. The present study was designed to examine the secretion rate of the reflex salivation evoked by the stimulation of the afferent lingual nerve and the pharyngeal branch of the vagus in ketamine-anesthetized cats.
1) Reflex secretion induced by stimulation of the unilateral afferent lingual nerve amounted 466±39.7μl/min for the submaxillary, 18±3.4μl/min for the sublingual, and 89±10.2μl/min for the parotid gland in the ipsilateral side.
2) Reflex secretion induced by stimulation of the unilateral afferent phary￢ngeal branch of the vagus amounted 408±35.4μl/min for the submaxillary, 12±2.3μl/min for the sublingual, and 97±12.1μi for the parotid gland in the ipsilateral side.
3) Salivary secretion rate induced by pilocarpine (0.5mg/kg, I. P) was sim￢ilar to that of the reflex secretion.
4) Secretion rates per minute per wet gm weight of the glands by stimulation of the afferent lingual nerve were 436±28.5μl for the submaxillary, 58±4.2μl for the sublingual, and 53±6.lμ1 for the parotid gland. Salivary secretion rate was not related to the size of gland.
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