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Nucleus suprachiasmaticus pars [[systema nervosum centrale|systematis nervosi centralis]] in hypothalamo anteriori invenitur, quo infra [[systema ventriculare|ventriculum tertium]] et supra [[chiasma opticum]] iacet.
== Edita principalia ==
== Nucleus suprachiasmaticus et officium suum "horologium corporis internum" ==▼
Edita principalia in [[zona subparaventricularis|''zonam subparaventricularem'']] informationem mittunt<ref>{{cite journal |authors=Vujovic N., Gooley J. J., et al. |title=Projections from the subparaventricular zone define four channels of output from the circadian timing system |journal=The journal of comparative neurology |year=2015 |month=Dec |volume=523 |issue=18 |pages=2714-37 |url=https://pubmed.ncbi.nlm.nih.gov/26010698/}}</ref>.
== Physiologia ==
▲=== Nucleus suprachiasmaticus et officium suum "horologium corporis internum" ===
{{main|Numerus circadianus}}
SCN cum circiter 20 000 [[neuron]]ibus ''horologium centralis corporis principale'' nominatur<ref>{{cite journal |authors=Herzog ED1, Hermanstyne T., Smyllie N. J., Hastings M. H. |title=Regulating the Suprachiasmatic Nucleus (SCN) Circadian Clockwork: Interplay between Cell-Autonomous and Circuit-Level Mechanisms |journal=Cold Spring Habor perspectives in biology |year=2017 |month=Ian |volume=9 |issue=1 |pages=a027706 |url=https://www.ncbi.nlm.nih.gov/pubmed/28049647}}</ref>. Signa ab [[Retina (anatomia)|retina]] per ''tractum retinohypothalamicum'' foris in nucleum veniunt. Quo fit, ut nucleus mores secundum cyclos diurnos animalis gubernat.
==== Coniunctio inter oculum et nucleum suprachiasmaticum ====
In [[stratum ganglionicum retinae|strato ganglionico retinae]] mittunt [[cellula ganglionica Retinae intrinsice photosensitiva|''cellulae ganglionicae intrinsice photosensitivae'']] (ipCGR), quae [[melanopsinum]]<ref>{{cite journal |authors=McNeill D. S., Sheely C. J., et al. |title=Development of melanopsin-based irradiance detecting circuitry |journal=Neural development |year=2011 |month=Mar |volume=18 |pages=10.1186/1749-8104-6-8 |url=https://www.ncbi.nlm.nih.gov/pubmed/21418557}}</ref> exprimunt, [[axon]]es suos per [[tractus retinohypothalamicus|tractum retinohypothalamicum]] directe in nucleum suprachiasmaticum, ibi imprimis in partem ventrolateralem.
==== Cellulae partis ventrolaterals ====
Cellulae partis ventrolateralis quasi nucleus in sensu strictu sunt. Eae regulator spatii agunt osntendentes repetitiva et signa et expressio [[oncogenum|proto-oncogeni]] ''[[c-Fos]]''. Receptoria [[melatoninum|melatonini]] in nucleo, circuitus [[retroactio]]nis, insunt.
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