{"id":49743,"date":"2018-05-04T13:12:09","date_gmt":"2018-05-04T13:12:09","guid":{"rendered":"https:\/\/www.humanitas.net\/?post_type=wiki&p=49743"},"modified":"2018-05-04T13:12:09","modified_gmt":"2018-05-04T13:12:09","slug":"mitralni-zalisak","status":"publish","type":"wiki","link":"https:\/\/www.humanitas.net\/sr\/wiki\/anatomija\/mitralni-zalisak\/","title":{"rendered":"Mitralni zalisak"},"content":{"rendered":"

\u0160ta je mitralni zalistak?<\/h2>\n

Mitralni zalistak je jedan od \u010detiri sr\u010dana zaliska. Sme\u0161ten je izme\u0111u leve pretkomore i leve komore. Bilkupsidalni zalistak slu\u017ei za usmeravanje krvi iz leve pretkomore u levu komoru i spre\u010davanje obrnutog toka krvi budu\u0107i da se na kraju sistole pretkomore odnosno dijastole komore ovaj zalistak zatvori.<\/p>\n

 <\/p>\n

Srce je organ podeljen na nekoliko delova, koji poma\u017eu u obavljanju njegove osnovne funkcije: da pumpa krv bogatu kiseonikom prema ostalim delovima tela (\u0107elije, tkiva i organi) kako bi ih ishranila, i da primi krv sa ugljen-dioksidom koja se dalje \u0161alje u plu\u0107a gde se obavlja razmena gasova i gde se krv snabdeva kiseonikom.<\/p>\n

 <\/p>\n

Sr\u010dani zalisci su sitne strukture koje su odgovorne za vra\u0107anje krvi unazad obezbe\u0111uju\u0107i vo\u0111enje krvi u pravom smeru. Mitralni zalistak je atrioventrikularni zalistak koji se sastoji iz dve membrane \u00a0(zaliska), koji su veoma otporni i sa\u010dinjeni od vezivnog tkiva i koji se otvaraju i zatvaraju veoma uskla\u0111eno tokom svakog sr\u010danog otkucaja. Ovi zalisci povezani su sa firboznim prstenom i preko njega sa zidom srca. Ivice ovih zalisaka spojene su sa papilarnim mi\u0161i\u0107ima putem tetivnih niti, vlaknima vezivnog tkiva koja su stimulisana protokom krvi i sr\u010danim fazama \u010dime poma\u017eu u spre\u010davanju povratka krvi u suprotnom pravcu..<\/p>\n

 <\/p>\n

Koja je uloga mitralnog zalistka?<\/h2>\n

Srce je pumpa koja prosle\u0111uje krv bogatu kiseonikom iz plu\u0107a prema organima i tkivima u zamenu za krv bogatu ugljen-dioksidom koja mora da se u plu\u0107ima obogati kiseonikom. Krv bogata kiseonikom prenosi se arterijom aortom do celog tela budu\u0107i da se ona grana na manje arterije i na kraju kapilare. Krv bogata ugljen-dioksidom vra\u0107a se u srce preko vena odakle se \u0161alje malim krvotokom u plu\u0107a gde se vr\u0161i razmena gasova, odnosno ugljen-dioksida za kiseonik.<\/p>\n

 <\/p>\n

Mitralni zalistak kontroli\u0161e prolazak krvi kroz otvor izme\u0111u leve pretkomore i leve komore.<\/p>\n

 <\/p>\n

Sr\u010dani ciklus sastoji se od dve faze: faze opu\u0161tanja (dijastolna faza) i faze kontrakcije (sistolna faza). Tokom prve faze (dijastole), zalisci izme\u0111u pretkomora i komora su otvoreni, a \u010ditavo srce je opu\u0161teno. U ovoj fazi polumese\u010dasti zalisci su zatvoreni, spre\u010davaju\u0107i krv da u\u0111e u vaskularno korito. Tokom druge faze (sistolne faze), komore i pretkomore kontrahuju se na uskla\u0111eni na\u010din: najpre pretkomora (atrijalna sistola), a zatim i komore (ventrikularna sistola). Tokom kontrakcije komora, krv koja se nalazila u pretkomori dospeva u komoru i atrioventrikularni zalistak se zatvara. Kontrakcijom leve komore krv se potiskuje u aortu odakle se prosle\u0111uje prema svim delovima tela.<\/p>\n

 <\/p>\n

Mehanizam atrioventrikularnih i trolisnih zalistaka reguli\u0161e se protokom krvi i pritiskom tokom faza sr\u010danog ciklusa. Tokom sistome komore, krvni pritisak se usmerava navi\u0161e prema membrani, \u010dime se spre\u010dava povratak krvi u suprotnom pravcu. Vezivne niti (sr\u010dane strune) koje spajaju papilarne mi\u0161i\u0107e sa trikuspidalnim i mitralnim zaliskom srca, spre\u010davaju da se zalistak potisne nagore unutar pretkomore. U slu\u010dajevima kada postoje anatomski ili funkcionalni defekti ovo mo\u017ee da dovede do prolapsa zalistka.<\/p>\n","protected":false},"author":11,"featured_media":0,"template":"","wiki-categories":[1666],"wiki-types":[],"yoast_head":"\nMitralni zalisak - Humanitas.net<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.humanitas.net\/sr\/wiki\/anatomija\/mitralni-zalisak\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Mitralni zalisak - Humanitas.net\" \/>\n<meta property=\"og:description\" content=\"\u0160ta je mitralni zalistak? Mitralni zalistak je jedan od \u010detiri sr\u010dana zaliska. Sme\u0161ten je izme\u0111u leve pretkomore i leve komore. Bilkupsidalni zalistak slu\u017ei za usmeravanje krvi iz leve pretkomore u levu komoru i spre\u010davanje obrnutog toka krvi budu\u0107i da se na kraju sistole pretkomore odnosno dijastole komore ovaj zalistak zatvori.   Srce je organ podeljen […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.humanitas.net\/sr\/wiki\/anatomija\/mitralni-zalisak\/\" \/>\n<meta property=\"og:site_name\" content=\"Humanitas.net\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/HumanitasInternational\/\" \/>\n<meta name=\"twitter:card\" content=\"summary\" \/>\n<meta name=\"twitter:site\" content=\"@humanitasmilano\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.humanitas.net\/sr\/wiki\/anatomija\/mitralni-zalisak\/\",\"url\":\"https:\/\/www.humanitas.net\/sr\/wiki\/anatomija\/mitralni-zalisak\/\",\"name\":\"Mitralni zalisak - Humanitas.net\",\"isPartOf\":{\"@id\":\"https:\/\/www.humanitas.net\/sr\/#website\"},\"datePublished\":\"2018-05-04T13:12:09+00:00\",\"dateModified\":\"2018-05-04T13:12:09+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.humanitas.net\/sr\/wiki\/anatomija\/mitralni-zalisak\/#breadcrumb\"},\"inLanguage\":\"sr\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.humanitas.net\/sr\/wiki\/anatomija\/mitralni-zalisak\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.humanitas.net\/sr\/wiki\/anatomija\/mitralni-zalisak\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.humanitas.net\/sr\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Wikis\",\"item\":\"https:\/\/www.humanitas.net\/sr\/wiki\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Mitralni zalisak\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.humanitas.net\/sr\/#website\",\"url\":\"https:\/\/www.humanitas.net\/sr\/\",\"name\":\"Humanitas.net\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\/\/www.humanitas.net\/sr\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.humanitas.net\/sr\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"sr\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.humanitas.net\/sr\/#organization\",\"name\":\"Humanitas\",\"url\":\"https:\/\/www.humanitas.net\/sr\/\",\"sameAs\":[\"https:\/\/www.facebook.com\/HumanitasInternational\/\",\"https:\/\/twitter.com\/humanitasmilano\"],\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"sr\",\"@id\":\"https:\/\/www.humanitas.net\/sr\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.humanitas.net\/content\/uploads\/2017\/05\/logo-news-.png\",\"contentUrl\":\"https:\/\/www.humanitas.net\/content\/uploads\/2017\/05\/logo-news-.png\",\"width\":314,\"height\":61,\"caption\":\"Humanitas\"},\"image\":{\"@id\":\"https:\/\/www.humanitas.net\/sr\/#\/schema\/logo\/image\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Mitralni zalisak - Humanitas.net","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.humanitas.net\/sr\/wiki\/anatomija\/mitralni-zalisak\/","og_locale":"en_US","og_type":"article","og_title":"Mitralni zalisak - Humanitas.net","og_description":"\u0160ta je mitralni zalistak? Mitralni zalistak je jedan od \u010detiri sr\u010dana zaliska. Sme\u0161ten je izme\u0111u leve pretkomore i leve komore. Bilkupsidalni zalistak slu\u017ei za usmeravanje krvi iz leve pretkomore u levu komoru i spre\u010davanje obrnutog toka krvi budu\u0107i da se na kraju sistole pretkomore odnosno dijastole komore ovaj zalistak zatvori.   Srce je organ podeljen […]","og_url":"https:\/\/www.humanitas.net\/sr\/wiki\/anatomija\/mitralni-zalisak\/","og_site_name":"Humanitas.net","article_publisher":"https:\/\/www.facebook.com\/HumanitasInternational\/","twitter_card":"summary","twitter_site":"@humanitasmilano","twitter_misc":{"Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.humanitas.net\/sr\/wiki\/anatomija\/mitralni-zalisak\/","url":"https:\/\/www.humanitas.net\/sr\/wiki\/anatomija\/mitralni-zalisak\/","name":"Mitralni zalisak - Humanitas.net","isPartOf":{"@id":"https:\/\/www.humanitas.net\/sr\/#website"},"datePublished":"2018-05-04T13:12:09+00:00","dateModified":"2018-05-04T13:12:09+00:00","breadcrumb":{"@id":"https:\/\/www.humanitas.net\/sr\/wiki\/anatomija\/mitralni-zalisak\/#breadcrumb"},"inLanguage":"sr","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.humanitas.net\/sr\/wiki\/anatomija\/mitralni-zalisak\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.humanitas.net\/sr\/wiki\/anatomija\/mitralni-zalisak\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.humanitas.net\/sr\/"},{"@type":"ListItem","position":2,"name":"Wikis","item":"https:\/\/www.humanitas.net\/sr\/wiki\/"},{"@type":"ListItem","position":3,"name":"Mitralni zalisak"}]},{"@type":"WebSite","@id":"https:\/\/www.humanitas.net\/sr\/#website","url":"https:\/\/www.humanitas.net\/sr\/","name":"Humanitas.net","description":"","publisher":{"@id":"https:\/\/www.humanitas.net\/sr\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.humanitas.net\/sr\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"sr"},{"@type":"Organization","@id":"https:\/\/www.humanitas.net\/sr\/#organization","name":"Humanitas","url":"https:\/\/www.humanitas.net\/sr\/","sameAs":["https:\/\/www.facebook.com\/HumanitasInternational\/","https:\/\/twitter.com\/humanitasmilano"],"logo":{"@type":"ImageObject","inLanguage":"sr","@id":"https:\/\/www.humanitas.net\/sr\/#\/schema\/logo\/image\/","url":"https:\/\/www.humanitas.net\/content\/uploads\/2017\/05\/logo-news-.png","contentUrl":"https:\/\/www.humanitas.net\/content\/uploads\/2017\/05\/logo-news-.png","width":314,"height":61,"caption":"Humanitas"},"image":{"@id":"https:\/\/www.humanitas.net\/sr\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/www.humanitas.net\/sr\/wp-json\/wp\/v2\/wiki\/49743"}],"collection":[{"href":"https:\/\/www.humanitas.net\/sr\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/www.humanitas.net\/sr\/wp-json\/wp\/v2\/types\/wiki"}],"author":[{"embeddable":true,"href":"https:\/\/www.humanitas.net\/sr\/wp-json\/wp\/v2\/users\/11"}],"version-history":[{"count":0,"href":"https:\/\/www.humanitas.net\/sr\/wp-json\/wp\/v2\/wiki\/49743\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.humanitas.net\/sr\/wp-json\/wp\/v2\/media?parent=49743"}],"wp:term":[{"taxonomy":"wiki-categories","embeddable":true,"href":"https:\/\/www.humanitas.net\/sr\/wp-json\/wp\/v2\/wiki-categories?post=49743"},{"taxonomy":"wiki-types","embeddable":true,"href":"https:\/\/www.humanitas.net\/sr\/wp-json\/wp\/v2\/wiki-types?post=49743"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}