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The Spinal Origin of the Sympathetic Nerve Fibres to the Vascular and Secretory Components of the Rat Submaxillary Salivary Gland
Author(s) -
Templeton D.
Publication year - 1979
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.1979.sp002454
Subject(s) - stimulation , submaxillary gland , endocrinology , medicine , sympathetic trunk , sympathetic innervation , secretion , salivary gland , submandibular gland , chemistry , trunk , sympathetic nerve , anatomy , biology , ecology
The spinal origin of the sympathetic vasoconstrictor and secretory fibres to the submaxillary gland of the rat was identified in the pithed rat preparation by means of selective stimulation of small segments of the spinal outflow. Secretory and vascular responses were similar following stimulation in pithed rats to those following stimulation of the isolated superior cervical nerve trunk in anaesthetized rats. The spinal origin of the secretory and vascular fibres was coincident and it is concluded that if a separate control of blood flow and secretion by sympathetic fibres does exist that it must occur at the level of C.N.S. but that the nerves share a common pathway to the gland.