Gasserian ganglion


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Related to Gasserian ganglion: geniculate ganglion, Meckel's cave

Gasserian ganglion

[ga′ser·ē·ən ′gaŋ·glē·ən]
(nueroscience)
A group of nerve cells of the sensory root of the trigeminal nerve. Also known as semilunar ganglion.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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In cases of trigeminal rhizotomy, either passage of the needle through the foramen ovale or the stimulation of Gasserian ganglion by glycerol or electric current is usually sufficient to evoke TCR and can manifest as severe hypertension, tachycardia, and other ECG changes.
It is surrounded by various clinically significant structures, including the cochlea, middle ear, eustachian tube, gasserian ganglion, geniculate ganglion, greater superficial petrosal nerve, and jugular fossa.