Epifiza
Epifiza ili pinealna žlezda (lat. Glandula pinealis) je mala endokrina žlezda u mozgu, locirana između moždanih hemisfera. Kod čoveka ova žlezda je veličine zrna graška. Epifiza luči melatonin 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 | |
|---|---|
| |
| Dijagram hipofize i epifize u ljudskom mozgu | |
| Latinski | glandula pinealis |
| Gray's | subject #276 1277 |
| Arterija | Posteriorna moždana arterija |
| Prekursor | Neuralni ektoderm |
| MeSH | Pineal+gland |
Reference
uredi- ↑ Macchi M, Bruce J (2004). „Human pineal physiology and functional significance of melatonin”. Front Neuroendocrinol 25 (3–4): 177–95. DOI:10.1016/j.yfrne.2004.08.001. PMID 15589268.
- ↑ Arendt J, Skene DJ (2005). „Melatonin as a chronobiotic”. Sleep Med Rev 9 (1): 25–39. DOI:10.1016/j.smrv.2004.05.002. PMID 15649736. »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.«
Spoljašnje veze
uredi
- Histology at BU: Endocrine System: pineal gland (illustration)
- Anatomy Atlases, Microscopic atlas: Pineal gland
- MedPix: Images of Pineal region Arhivirano 2010-06-12 na Wayback Machine-u
- Ancient Brain Mapping and Origins of the Eye of Horus: Egyptian Study of the Pineal Gland Arhivirano 2014-05-17 na Wayback Machine-u