{"id":80953,"date":"2018-05-07T08:11:46","date_gmt":"2018-05-07T08:11:46","guid":{"rendered":"http:\/\/humanitasnet-new.local\/enciclopedia\/tanko-crevo\/"},"modified":"2018-05-07T08:11:46","modified_gmt":"2018-05-07T08:11:46","slug":"tanko-crevo","status":"publish","type":"enciclopedia","link":"https:\/\/humanitas-net.humweb.webiz.team\/sr\/wiki\/tanko-crevo\/","title":{"rendered":"Tanko crevo"},"content":{"rendered":"<h2 id=\"sta-je-tanko-crevo\">\u0160ta je tanko crevo?<\/h2>\n<p>Tanko crevo je najdu\u017ei deo digestivnog trakta i iznosi oko 7 metara. Re\u010d je o mi\u0161i\u0107noj cevi koja je podeljena na tri dela: dvanaestopala\u010dno crevo, prazno crevo (jejunum) i krivo crevo (ileum). Dvanaestopala\u010dno crevo obavlja rastvaranje hrane, dok se u jejunum i ileumu obavlja apsorpcija hranljivih materija odakle se one \u0161alju u krvotok.<\/p>\n<p>&nbsp;<\/p>\n<p>Tanko crevo prelazi u debelo crevo preko ileocekalnog spoja. Ono je deo gastrointestinalnog trakta izme\u0111u \u017eeluca i debelog creva, u kome se odvijaju proces varenja i apsorpcije hranljivih materija. Mukozna membrana koja prekriva unutra\u0161nje zidove tankog creva prekrivena je crevnim resicama (odgovornim za apsorpciju hranljivih materija unetih hranom) i cirkularnim naborima \u010dije prisustvo slu\u017ei za pove\u0107anje povr\u0161ine tankog creva kako bi se bolje odvijalo varenje i apsorpcija hranljivih materija.<\/p>\n<p>&nbsp;<\/p>\n<p>Dvanaestopala\u010dno crevo je po\u010detni deo tankog creva. Oblika je slova C i duga\u010dko je oko 25 cm, pru\u017ea se od kraja \u017eeluca sve do duodenojejunalne fleksure koja predstavlja granicu dvanaestopala\u010dnog creva i jejunum. Mukozni sloj tankog creva sadr\u017ei sekretin (hormon koji stimuli\u0161e lu\u010denje sokova za varenje) i serotonin (neurotransmiter u centralnom nervnom sistemu) \u00a0a u njemu se odvija i apsorpcija gvo\u017e\u0111a i kalcijuma.<\/p>\n<p>&nbsp;<\/p>\n<p>Prazno crevo je drugi deo tankog creva. Nakon njega sledi ileum od koga se razlikuje u slede\u0107im karakteristikama (deblji zidovi, vi\u0161e crevnih resica i cirkularnih nabora). Ileum se spaja sa cekumom debelog creva na ileocekalnom spoju.<\/p>\n<p>&nbsp;<\/p>\n<p>Postoje razli\u010diti uzroci i vidovi oboljenja tankog creva. Me\u0111u neke od problema tankog creva ubrajaju se: Kronova bolest, celijakija, infekcije, sindrom razdra\u017eljivog creva, krvarenja, \u010dirovi, rak creva i opstrukcija creva. Tra\u017eenje medicinske pomo\u0107i je od velike va\u017enosti kako bi se odredio uzrok poreme\u0107aja i tako definisala odgovaraju\u0107a terapija i samim tim spre\u010dilo pogor\u0161avanje stanja i komplikacije. Zdrava, uravnote\u017eena ishrana kao i stimulansi creva \u010desto se preporu\u010duju kao najbolji na\u010din da se tanko crevo odr\u017ei zdravim i da se spre\u010de mogu\u0107e bolesti i komplikacije.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"koja-je-funkcija-tankog-creva\">Koja je funkcija tankog creva?<\/h2>\n<p>Generalno, u tankom crevu se zavr\u0161a proces varenja hrane koji po\u010dinje u ustima i nastavlja se u \u017eelucu. Njegova primarna uloga je da zavr\u0161i proces varenja uz pomo\u0107 crevnih sokova koji se proizvode u intestinalnim \u017elezdama (Liberkinove kripte) i da apsorbuje hranljive materije koje se nalaze u hrani. Kako bi se \u0161to bolje obavila ova funkcija, slo\u017eena povr\u0161ina mukozne membrane pove\u0107ana je prisustvom crevnih resica i cirkularnih nabora.<\/p>\n<p>&nbsp;<\/p>\n<p>Tanko crevo predstavlja mesto gde se obavlja 90% procesa varenja hrane i apsorpcije hranljivih materija, dok se ostalih 10% odvija u \u017eelucu i debelom crevu. Varenje se sastoji obi\u010dno iz dve faze: mehani\u010dkog i hemijskog varenja. U mehani\u010dko varenje spada \u017evakanje, kidanje i me\u0161anje hrane u ustima koja treba da se prosledi u \u017eeludac. Hemijsko varenje s druge strane, podrazumeva upotrebu enzima kako bi se hrana razlo\u017eila na hranljive materije koje se kasnije apsorbuju i prosle\u0111uju tkivima i organima u na\u0161em organizmu.<\/p>\n","protected":false},"featured_media":0,"parent":0,"template":"","Example":[1789],"class_list":["post-80953","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>Tanko crevo - 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=\"Tanko crevo - Humanitas.net\" \/>\n<meta property=\"og:description\" content=\"\u0160ta je tanko crevo? 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