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SECRETORY RESPONSES TO SYMPATHETIC STIMULATION OF THE CAT'S SALIVARY GLANDS IN A STATE OF RESTING SECRETION
Author(s) -
Emmelin N.,
Gjörstrup P.
Publication year - 1975
Publication title -
quarterly journal of experimental physiology and cognate medical sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.925
H-Index - 101
eISSN - 1469-445X
pISSN - 0033-5541
DOI - 10.1113/expphysiol.1975.sp002326
Subject(s) - stimulation , endocrinology , medicine , secretion , sympathetic nervous system , chemistry , blood pressure
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 α‐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 β‐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.