Epifiza
Epifiza ili pinealna žlezda (lat. glandula pinealis) je mala endokrina žlezda smeštena na bazi mozga, između moždanih hemisfera. Kod čoveka, ova žlezda je veličine zrna pšenice. Oblik žlezde podseća na borovu šišarku, po kojoj je i dobila ime. Epifiza luči melatonin - hormon koji reguliše budnost i spavanje. Kod životinja, melotonin je zadužen za funkciju polnog nagona, ponašanje, rast krzna, kamuflažu i zimski san. Glavne ćelije u epifizi koje luče hormon se zovu pinealociti.[1][2]
Epifiza | |
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Detalji | |
Latinski | glandula pinealis |
Prekurzor | Neuralni ektoderm |
Posteriorna moždana arterija | |
Pokazatelji | |
Grejova anatomija | p.1277 |
MeSH | Pineal+gland |
NeuroLex ID | Pineal body |
Dorlands /Elsevier | g_06/12392585 |
TA | A11.2.00.001 |
FMA | 62033 |
Anatomska terminologija |
Reference
уреди- ^ Macchi M, Bruce J (2004). „Human pineal physiology and functional significance of melatonin”. Front Neuroendocrinol. 25 (3–4): 177—95. PMID 15589268. doi:10.1016/j.yfrne.2004.08.001.
- ^ Arendt J, Skene DJ. „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.
Spoljašnje veze
уреди- Histology at BU: Endocrine System: pineal gland (illustration)
- Anatomy Atlases, Microscopic atlas: Pineal gland
- MedPix: Images of Pineal region
- Ancient Brain Mapping and Origins of the Eye of Horus: Egyptian Study of the Pineal Gland