An difríocht idir athruithe ar: "Faireog phinéalach"

[[Íomhá:FaireogPhiotútach&Phinéalach.jpg|thumb|350px]]Is feireog bheag [[inchríneach]] í '''an fhaireog phinéalach''' (tugtar uirthi freisin; 'an ball pinéalach', 'an eipifís cheirbreach' , agus 'an eipifís' nó 'an tríú súil') a bhíonn suite san [[inchinn]] veirteabrach. Táirgeann sí [[meileatoinin]], [[hormón]] arb é a n-éifeacht modhnú ar bpatrúin codalta/múscailte agus ar bhfeidhmeanna fótaithréimhseacha an ainmhí. <ref>{{cite journal | author = Macchi M, Bruce J | title = Human pineal physiology and functional significance of melatonin | journal = Front Neuroendocrinol | volume = 25 | issue = 3-4 | pages = 177–95 | year = 2004 | pmid = 15589268 | doi = 10.1016/j.yfrne.2004.08.001}}</ref><ref name="Arendt2005">{{cite journal |author=Arendt J, Skene DJ |title=Melatonin as a chronobiotic |journal=Sleep Med Rev |volume=9 |issue=1 |pages=25–39 |year=2005 |pmid=15649736 | quote = Exogenous melatonin has acute sleepiness-inducing and temperature-lowering effects during 'biological daytime', and when suitably timed (it is most effective around dusk and dawn) it will shift the phase of the human circadian clock (sleep, endogenous melatonin, core body temperature, cortisol) to earlier (advance phase shift) or later (delay phase shift) times. |doi=10.1016/j.smrv.2004.05.002 }}</ref> Tá cruth an bhuaircín aici (sin é an fáth a thugtar an t-ainm 'pinéalach' di), agus tá sí suite gearr de lár na hinchinne, idir an dá leathsféar, fillte in eitre san áit ina cheanglaíonn dhá leath den [[talamas]] le chéile.▼