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  • Title: Secretory responses to sympathetic stimulation of the cat's salivary glands in a state of resting secretion.
    Author: Emmelin N, Gjörstrup P.
    Journal: Q J Exp Physiol Cogn Med Sci; 1975 Oct; 60(4):325-32. PubMed ID: 1041802.
    Abstract:
    The secretory effect of sympathetic stimulation on the cat's submaxillary gland was augmented greatly when studied against a background of slow secretion evoked by parasympathetic stimulation at a low frequency and imitating the slow resting secretion normally present in the waking state. The sympathetic secretory threshold was markedly lowered, and even at low frequencies sympathetic stimulation caused a large, well-maintained response. After an alpha-adrenoceptor blocking drug sympathetic stimulation alone lost its secretory effect, but during resting secretion part of the accelerating effect was found to remain; this effect was elicited via beta-adrenoceptors. A marked secretory effect of sympathetic stimulation was also obtained during resting secretion in the parotid gland, where the sympathetic secretory effect is normally very small.
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