Mar 1, 1991

Pathways of parasympathetic and sensory cerebrovascular nerves in monkeys

Stroke; a Journal of Cerebral Circulation
J E HardeboN A Svendgaard


Using immunohistochemistry, we studied the origins and pathways of parasympathetic and sensory nerve fibers to the pial arteries in four squirrel monkeys. Following its application to the surface of the middle cerebral artery, the retrograde axonal tracer True Blue accumulated in parasympathetic neurons of the sphenopalatine ganglion and the internal carotid ganglion. The latter is strategically located where the internal carotid artery enters the cranium. Fibers from the sphenopalatine ganglion reach the internal carotid artery in the cavernous sinus region after running as rami orbitales. Before reaching the internal carotid artery, the fibers bypass aberrant sphenopalatine ganglia, with the most distant, the cavernous ganglion, being located in the cavernous sinus region. True Blue also accumulated in sensory neurons of the ophthalmic and maxillary divisions of the trigeminal ganglion and in sensory neurons of the internal carotid ganglion. Fibers from the ophthalmic division of the trigeminal ganglion reach the internal carotid artery as a branch through the cavernous sinus, bypassing the cavernous ganglion. Fibers from the maxillary division also bypass the cavernous ganglion after reaching it via a recurrent branch of the...Continue Reading

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Mentioned in this Paper

Cerebellar Mossy Fibers
Genus Saimiri
Pia Mater
Vasoactive Intestinal Peptide
Cerebrovascular Circulation
Afferent Neuron
Choline O-Acetyltransferase
Hypothalamic Substance P
Calcitonin Gene-Related Peptide II
Cerebrovascular Disorders

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