{"id":80922,"date":"2018-05-04T12:37:09","date_gmt":"2018-05-04T12:37:09","guid":{"rendered":"http:\/\/humanitasnet-new.local\/enciclopedia\/olfaction-2\/"},"modified":"2018-05-04T12:37:09","modified_gmt":"2018-05-04T12:37:09","slug":"olfaction-2","status":"publish","type":"enciclopedia","link":"https:\/\/humanitas-net.humweb.webiz.team\/sr\/wiki\/olfaction-2\/","title":{"rendered":"Olfaction"},"content":{"rendered":"<h2 id=\"olfaktivno-culo\">Olfaktivno \u010dulo<\/h2>\n<p>&nbsp;<\/p>\n<p>\u010culo mirisa, poznato i kao olfaktivno predstavlja \u010dulo koje prima mirisne stimuluse.<\/p>\n<p>Ovo \u010dulo posredovano je pomo\u0107u specijalizovanih senzornih \u0107elija nazalne \u0161upljine. U cilju percepcije mirisa neophodna je interakcija izme\u0111u nosa (\u010dija mukoza je sposobna da prenosi olfaktorne stimuluse) kao i \u0107elije odgovorne za transport ovih impulsa ka mozgu gde se de\u0161ifruju te percepiraju kao miris.<\/p>\n<p>&nbsp;<\/p>\n<p>Miris je odre\u0111en hemikalijama,\u00a0 na koje senzorni receptori reaguju. Ovi hemoreceptori lokalizovani su na olfaktivnom epitelu,\u00a0 delu tkiva lokalizovanog u vi\u0161im partijama nosne \u0161upljine.<\/p>\n<p>&nbsp;<\/p>\n<p>Olfaktorni epitel sa\u010dinjen je od tri tipa \u0107elija: senzornih neurona (od kojih je svaki sa primarnim cilijama),\u00a0 daju\u0107i potporu \u0107elijama izme\u0111u njih kao i bazalnim \u0107elijama koje se pravilno dele te produkuju mla\u0111e senzorne neurone radi obnove odumrlih.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Olfaktivni receptori predstavljaju familiju G-protein parnih receptora ili GPCRs na kra\u0107i period. Postoji nekoliko primera: receptori za peptidne hormone, receptor iza ukus, svetlosni receptro rodopsin, GABA receptos na odre\u0111enim sinapsama u mo\u017edanom tkivu.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"sta-je-miris\">\u0160ta je miris ?<\/h2>\n<p>&nbsp;<\/p>\n<p>Miris predstavlja jedno od pet \u010dula koje omogu\u0107ava \u010doveku da registruje miisne stimuluse. Hemoreceptori su specijalne \u0107elije koje su odgovorne za prijem mirisa i sposobne su da eaguju na hemisjke karakteristike mirisnih supstanci. Lokalizovane su u odre\u0111enim regijama mozga gde je nazalna mukoza, poznata kao olfaktorna mukoza i karakteri\u0161e se \u017eu\u0107kastom pigmentacijom.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Ovi neuroni su visokospecijalizovani sa nakupinom cilija i bazom sa produ\u017eenim nervnim vlaknima \u2013 preko etmoidne kosti (kost koja gradi krov nazalne \u0161upljine), dose\u017eu\u0107i do olfaktornog bulbusa; odatle polaze neuroni koji \u0161alju impulse u mozak. Unutar olfaktivne mukoze, mirisni molekuli postaju rastvorljivi pre nego dospeju na neurone. Ovo je fenomen koji \u0161alje nevne impulse i informacije o specifi\u010dnim karakteristikama mirisa. Oni prolaze kroz olfaktivne bubluse i kona\u010dno sti\u017eu do mo\u017edanih centara.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Patolo\u0161ki poreme\u0107aji mirisa mogu biti u dva oblika \u2013 kvantitativni i kvalitativni. Kvantitativni poreme\u0107aj karakteri\u0161e se postojanjem hiposmije ili parcijalne redukcije \u010dula mirisa, dok je anosmija\u00a0 predstavljena kao totalna redukcija \u010dula mirisa. U slu\u010daju redukcije kvaliteta \u010dula mirisam govorimo o parosmiji koja predstavlja poreme\u0107aj koiji se karakteri\u0161e poja\u010danim ose\u0107ajem \u010dula mirisa u ljudskom organizmu. Uzo\u010dni poreme\u0107aj ovog stanja mo\u017ee biti:\u00a0 rinitis, sinusitis, karcinom,\u00a0 lezije mukoze razli\u010ditog porekla (virusne, traumatske ili zapaljenske). Poreme\u0107aji mirisa mogu nesumnjivo uticati i na ose\u0107aj ukusa.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"koje-su-osnovne-funkcije-cula-mirisa\">Koje su osnovne funkcije \u010dula mirisa?<\/h2>\n<p>&nbsp;<\/p>\n<p>\u010culo mirisa\u00a0 predstavlja pomo\u0107no \u010dulo radi percepcije mirisnih moelkula te omogu\u0107ava identifikaciju odre\u0111enih objekata ili hemikalija u na\u0161oj sredini.<\/p>\n<p>&nbsp;<\/p>\n<p>Ljudsko \u010dulo mirisa sposobno je da razlikuje izme\u0111u 100 i 1000 razli\u010ditih kombinacija mirisnih molekula, od kojih svaki ima svoju specifi\u010dnu strukturu.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"featured_media":0,"parent":0,"template":"","Example":[1789],"class_list":["post-80922","enciclopedia","type-enciclopedia","status-publish","hentry","enciclopedia_category-anatomija"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Olfaction - Humanitas.net<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"sr_RS\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Olfaction - Humanitas.net\" \/>\n<meta property=\"og:description\" content=\"Olfaktivno \u010dulo &nbsp; \u010culo mirisa, poznato i kao olfaktivno predstavlja \u010dulo koje prima mirisne stimuluse. 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