name	retinohypothalamic_tract
namespace	http://cytomer.bioinf.med.uni-goettingen.de#
parent	 neural_pathway 
parent	 part_of_brain 
comment [en]	The retinohypothalamic tract is a photic input pathway.The origin of the retinohypothalamic tract is the intrinsically photosensitive Retinal Ganglion Cells (ipRGC), which contain the photopigment melanopsin. The axons of the ipRGCs belonging to the retinohypothalamic tract project directly, monosynaptically, to the suprachiasmatic nuclei via the optic nerve and the optic chiasm. The suprachiasmatic nuclei receive and interpret information on environmental light, dark and day length, important in the entrainment of the 'body clock'. They can coordinate peripheral 'clocks' and direct the pineal gland to secrete the hormone melatonin.
label [en]	retinohypothalamic tract
label [med]	Tractus retinohypothalamicus
ACC []	cy0006502
organNo []	26172
speciesNo []	86
nameMedicineSynonym []	RHT
hasCell	http://cytomer.bioinf.med.uni-goettingen.de/cell#glial_cell_of_central_nervous_system
locatedIn	optic_nerve_of_cranial_nerves_II
isPartOf	white_substance_of_hypothalamus
hasCell	astrocyte
hasCell	http://cytomer.bioinf.med.uni-goettingen.de/cell#glioblast
leadsInto	suprachiasmatic_nucleus_of_hypothalamus