{"id":81186,"date":"2018-05-16T10:22:06","date_gmt":"2018-05-16T10:22:06","guid":{"rendered":"http:\/\/humanitasnet-new.local\/enciclopedia\/organele-de-simt\/"},"modified":"2018-05-16T10:22:06","modified_gmt":"2018-05-16T10:22:06","slug":"organele-de-simt","status":"publish","type":"enciclopedia","link":"https:\/\/humanitas-net.humweb.webiz.team\/ro\/wiki\/organele-de-simt\/","title":{"rendered":"Organele de sim\u021b"},"content":{"rendered":"<p>Exist\u0103 cinci sim\u021buri principale \u0219i fiecare const\u0103 din organe cu structuri celulare specializate, care au func\u021bii precise \u0219i receptori specifici pentru stimuli. Toate aceste organe con\u021bin celule care au leg\u0103turi cu sistemul nervos \u0219i, prin urmare, cu creierul. Sensibilitatea se \u00eencheie la nivelurile simple din celule \u0219i se integreaz\u0103 \u00een senza\u021biile din sistemul nervos. Cele cinci sim\u021buri sunt v\u0103zul (cel mai dezvoltat sim\u021b la om), auzul (al doilea cel mai dezvoltat sim\u021b), gustul, mirosul \u0219i sim\u021bul tactil. Acestea permit oamenilor s\u0103 interac\u021bioneze la diferite niveluri cu lumea din jurul lor. Fiecare dintre aceste sim\u021buri corespunde unui anumit organ al corpului: vederea este legat\u0103 de ochi, auzul de urechi, gustul de gur\u0103, mirosul de nas, atingerea de piele.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"ce-sunt-cele-cinci-simturi\">Ce sunt cele cinci sim\u021buri?<\/h2>\n<p>V\u0103zul este sim\u021bul responsabil pentru percep\u021bia stimulilor vizuali. Ne permite s\u0103 identific\u0103m forme, reliefuri, distan\u021be \u0219i culori la ceea ce se observ\u0103. Vederea binocular\u0103 (adic\u0103 cea efectuat\u0103 de ambii ochi \u00een acela\u0219i timp) este cea care permite percep\u021bia obiectelor tridimensionale \u00eentr-un spa\u021biu.<\/p>\n<p>&nbsp;<\/p>\n<p>Auzul este sim\u021bul responsabil cu ob\u021binerea sunetele care ies din \u0219i \u00een jurul corpului uman \u0219i pentru a le transmite, printr-un mecanism complex care \u00ee\u0219i are originea \u00een pavilioane, \u0219i de a permite mai departe unei anumite zone a creierului s\u0103 le primeasc\u0103 \u0219i s\u0103 le decodeze.<\/p>\n<p>&nbsp;<\/p>\n<p>Gustul este modul \u00een care oferim informa\u021bii despre ce arom\u0103 au anumite m\u00e2nc\u0103ruri sau b\u0103uturi, ceea ce ne permite s\u0103 facem distinc\u021bia \u00eentre am\u0103r\u0103ciune, dulcea\u021b\u0103, arom\u0103 \u0219i aciditate. Structurile care ne permit s\u0103 apreciem aroma a ceea ce introducem \u00een gur\u0103 receptorilor senzoriali sunt foarte specializate: ele sunt numite papile \u0219i muguri gustativi, care se g\u0103sesc pe limb\u0103, palat, faringe \u0219i laringe. Integrarea gusturilor &#8220;primare&#8221; provine din senza\u021bii de gust mai complexe.<\/p>\n<p>&nbsp;<\/p>\n<p>Sim\u021bul olfactiv este sim\u021bul principal, care permite percep\u021bia stimulilor parfuma\u021bi. Chemoreceptorii sunt celule speciale, care pot reac\u021biona la caracteristicile chimice ale substan\u021belor mirositoare, \u0219i sunt situate \u00eentr-o anumit\u0103 zon\u0103 a mucoasei nazale, mucoasa olfactiv\u0103. Ace\u0219ti neuroni sunt foarte specializa\u021bi, cu un cuib de cili, \u0219i bazele lor sunt prelungite \u00een fibrele nervoase, prin osul etmoid (osul care formeaz\u0103 partea de sus a cavit\u0103\u021bii nazale), ajung\u00e2nd la bulbii olfactivi; de aici, al\u021bi neuroni ajung apoi la creier, care declan\u0219eaz\u0103 percep\u021bia anumitor mirosuri.<\/p>\n<p>&nbsp;<\/p>\n<p>Sim\u021bul tactil este cel care ne permite s\u0103 recunoa\u0219tem anumite caracteristici ale obiectelor fizice cu care intr\u0103m \u00een contact, cum ar fi duritatea sau forma. Transmiterea informa\u021biei sim\u021bului tactil de la suprafa\u021ba exterioar\u0103 a corpului la creier este posibil\u0103 prin mecanismele complexe, care provin din celule foarte specializate \u00een acest scop, receptorii tactili.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"ce-functii-indeplinesc-organele-simturilor\">Ce func\u021bii \u00eendeplinesc organele sim\u021burilor?<\/h2>\n<p>Organele de sim\u021b sunt organele (ochii, urechile, gura, nasul \u0219i pielea) care le permit oamenilor s\u0103 interac\u021bioneze la diferite niveluri cu lumea din jurul lor. Ele au fost esen\u021biale pentru supravie\u021buirea omenirii \u0219i au fost clasificate \u00een mod tradi\u021bional de c\u0103tre Aristotel (384 &#8211; 322 \u00ee.Hr.)<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"featured_media":0,"parent":0,"template":"","Example":[1792],"class_list":["post-81186","enciclopedia","type-enciclopedia","status-publish","hentry","enciclopedia_category-anatomie"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Organele de sim\u021b - 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=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Organele de sim\u021b - Humanitas.net\" \/>\n<meta property=\"og:description\" content=\"Exist\u0103 cinci sim\u021buri principale \u0219i fiecare const\u0103 din organe cu structuri celulare specializate, care au func\u021bii precise \u0219i receptori specifici pentru stimuli. Toate aceste organe con\u021bin celule care au leg\u0103turi cu sistemul nervos \u0219i, prin urmare, cu creierul. Sensibilitatea se \u00eencheie la nivelurile simple din celule \u0219i se integreaz\u0103 \u00een senza\u021biile din sistemul nervos. 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