geniculohypothalamic tract


Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia.

geniculohypothalamic tract

An axon tract originating in the lateral geniculate nucleus of the thalamus and innervating the suprachiasmatic nuclei of the hypothalamus. The suprachiasmatic nuclei contain pacemakers of the circadian rhythm system, and the geniculohypothalamic tract provides visual input that helps to entrain the pacemaker cells.
See also: tract