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KMID : 0376219810180010029
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Chonnam Medical Journal
1981 Volume.18 No. 1 p.29 ~ p.33
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The Role of the Cervical Sympathetics on the Submaxillary Salivation´ in Reserpine-treated eats
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吉洹植/Gill, Won Sik
李鐘銀/朴炳林/金在浹/Lee, Jongeun/Park, Byung Rim/Kim, Jeh Hyub
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Abstract
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The role of the cervical sympathetics on the submaxillary salivation was investigated in reserpine-treated cats. Stimulation of the cervical sympathetics elicited a few drops of salivation in controls while no salivation was observed in reserpine-treated cats. Salivation evoked by stimulating the chorda tympani showed no significant difference between both groups. The chorda-induced salivation was inhibited by superimposed excitation of the cervical sympathetics in controls but the response was not observed in reserpine-treated cats. Intravenous injection of epinephrine evoked a scanty flow of saliva, and the flow rate was gradually diminished and finally ceased by repeated injection of the drug in both groups. And further, the total amount of saliva collected during the repeated injection of epinephrine revealed no significant difference between both groups. On the other hand, the inhibitory effect of epinephrine on the chordainduced salivation was more pronounced in reserpine-treated cats. These results suggest that the sympathetic salivary flow is not real secretion from the gland, but simple elimination of the saliva already present in the duct due to contraction of the duct wall; and that the cervical sympathetics play a role in inhibiting salivation.
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