{"id":7058,"date":"2022-09-02T10:50:27","date_gmt":"2022-09-02T07:50:27","guid":{"rendered":"http:\/\/doctorexpres.ro\/?p=7058"},"modified":"2022-09-02T10:50:42","modified_gmt":"2022-09-02T07:50:42","slug":"de-ce-singele-e-rosu-iar-venele-albastre","status":"publish","type":"post","link":"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/","title":{"rendered":"De ce s\u00eengele e ro\u015fu, iar venele albastre?"},"content":{"rendered":"

Te-ai \u00eentrebat vreodat\u0103 de ce s\u00eengele e ro\u015fu? Sau de ce venele de sub piele s\u00eent albastre? Totul este legat de culorile celulelor ro\u0219ii ale s\u00eengelui.<\/p>\n

Celulele ro\u0219ii din s\u00eenge con\u0163in o molecul\u0103 numit\u0103 hemoglobin\u0103, care leag\u0103 \u0219i transport\u0103 oxigen prin corp. Hemoglobina este alc\u0103tuit\u0103 din patru lan\u0163uri de proteine care leag\u0103 c\u00eete o structur\u0103 chimic\u0103 \u00een form\u0103 de inel numit\u0103 hem.<\/p>\n

Celulele ro\u0219ii din s\u00eenge s\u00eent ro\u0219ii din cauza hemoglobinei<\/a>. S\u00eengele este ro\u0219u din cauza a milioane de globule ro\u0219ii pe care le con\u0163ine.<\/p>\n

Culoarea joac\u0103 un rol important \u00een multe aspecte ale biologiei, explic\u0103 autorii unui articol recent publicat \u00een revista Archives of Patology & Laboratory Medicine. Dr. Sergio Pi\u00f1a-Oviedo, de la Departamentul de Hematopatologie din cadrul Centrului de Cancer Anderson din Houston, Texas, \u0219i colegii explic\u0103 relevan\u0163a \u0219i biochimia culorii \u00een organele umane. Culoarea este important\u0103 pentru \u201ecamuflaj \u0219i protec\u0163ie, metabolism, comportament sexual \u0219i comunicare<\/em>\u201d.<\/p>\n

Lan\u0163urile de proteine din molecula de hemoglobin\u0103 <\/a>s\u00eent codificate de gene. Muta\u0163iile \u00een genele globinei pot provoca boli cum ar fi talasemia.<\/p>\n

Pentru a capta oxigenul<\/a>, fiecare caten\u0103 proteic\u0103 se leag\u0103 de o grupare hem, permi\u0163\u00eend un maximum de patru molecule de oxigen s\u0103 se lege pe o molecul\u0103 de hemoglobin\u0103. \u00cen centrul hemului st\u0103 o molecul\u0103 de fier. Fierul <\/a>face ca hemul s\u0103 arate ro\u0219u-maroniu. Dar dac\u0103 fierul este \u00eenlocuit cu un alt metal?<\/p>\n

Frunzele plantelor s\u00eent verzi deoarece clorofila din frunze con\u0163ine magneziu<\/a> \u00een centrul inelului. La animalele <\/a>cu s\u00eenge rece, s\u00eengele apare albastru deoarece atomii de cupru<\/a> stau \u00een centrul inelului \u0219i se leag\u0103 de oxigen.<\/p>\n

Revenind la s\u00eengele uman, fierul din hemoglobin\u0103 leag\u0103 oxigenul din pl\u0103m\u00eeni pe m\u0103sur\u0103 ce inhala\u0163i aer. Acum, s\u00eengele arat\u0103 ro\u0219u aprins, deoarece este pompat departe de pl\u0103m\u00eeni <\/a>la \u0163esuturile din corp. C\u00eend oxigenul este eliberat, acesta este \u00eenlocuit cu dioxid de carbon, care ajunge apoi \u00eenapoi \u00een pl\u0103m\u00eeni \u0219i e expulzat din corp, \u00een timp ce respir\u0103m. C\u00eend dioxidul de carbon se leag\u0103 de hemoglobin\u0103, culoarea se schimb\u0103 de la ro\u0219u str\u0103lucitor la ro\u0219u \u00eenchis.<\/p>\n

Dar de ce venele par albastre? Este o iluzie. Venele<\/a> s\u00eent de fapt alb-roz. Culoarea albastr\u0103 pe care o percepem este o combina\u0163ie a s\u00eengelui, vasului, pielii \u0219i a procesului care ne permite s\u0103 vedem culoarea.<\/p>\n

Sursa: medicalnewstoday.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Te-ai \u00eentrebat vreodat\u0103 de ce s\u00eengele e ro\u015fu? Sau de ce venele de sub piele s\u00eent albastre? Totul este legat<\/p>\n","protected":false},"author":4,"featured_media":7522,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[92,1226],"tags":[11054,506,11053,8503,2690,11051,1087,1895,1896,9629,11052],"class_list":["post-7058","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-inima-si-sistem-circulator","category-utile","tag-catena-proteica","tag-clorofila","tag-culoarea-sangelui","tag-cupru","tag-dioxid-de-carbon","tag-dr-sergio-pina-oviedo","tag-fier","tag-hem","tag-hemoglobina","tag-oxigen","tag-talasemie"],"yoast_head":"\nDe ce s\u00eengele e ro\u015fu, iar venele albastre? - Doctor Expres<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"De ce s\u00eengele e ro\u015fu, iar venele albastre? - Doctor Expres\" \/>\n<meta property=\"og:description\" content=\"Te-ai \u00eentrebat vreodat\u0103 de ce s\u00eengele e ro\u015fu? Sau de ce venele de sub piele s\u00eent albastre? Totul este legat\" \/>\n<meta property=\"og:url\" content=\"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/\" \/>\n<meta property=\"og:site_name\" content=\"Doctor Expres\" \/>\n<meta property=\"article:published_time\" content=\"2022-09-02T07:50:27+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-09-02T07:50:42+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/doctorexpres.ro\/wp-content\/uploads\/2017\/08\/red_veins_and_blue_veins__by_alan_jacob_nny_cade-d5k7zym.png\" \/>\n\t<meta property=\"og:image:width\" content=\"460\" \/>\n\t<meta property=\"og:image:height\" content=\"277\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Doctor Expres\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Scris de\" \/>\n\t<meta name=\"twitter:data1\" content=\"Doctor Expres\" \/>\n\t<meta name=\"twitter:label2\" content=\"Timp estimat pentru citire\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/#article\",\"isPartOf\":{\"@id\":\"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/\"},\"author\":{\"name\":\"Doctor Expres\",\"@id\":\"https:\/\/doctorexpres.ro\/#\/schema\/person\/28f79c329d023ab5816a649c97121076\"},\"headline\":\"De ce s\u00eengele e ro\u015fu, iar venele albastre?\",\"datePublished\":\"2022-09-02T07:50:27+00:00\",\"dateModified\":\"2022-09-02T07:50:42+00:00\",\"mainEntityOfPage\":{\"@id\":\"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/\"},\"wordCount\":432,\"image\":{\"@id\":\"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/#primaryimage\"},\"thumbnailUrl\":\"http:\/\/doctorexpres.ro\/wp-content\/uploads\/2017\/08\/red_veins_and_blue_veins__by_alan_jacob_nny_cade-d5k7zym.png\",\"keywords\":[\"catena proteica\",\"clorofila\",\"culoarea sangelui\",\"cupru\",\"dioxid de carbon\",\"Dr. Sergio Pi\u00f1a-Oviedo\",\"fier\",\"hem\",\"hemoglobina\",\"oxigen\",\"talasemie\"],\"articleSection\":[\"Inim\u0103 \u015fi sistem circulator\",\"Utile\"],\"inLanguage\":\"ro-RO\"},{\"@type\":\"WebPage\",\"@id\":\"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/\",\"url\":\"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/\",\"name\":\"De ce s\u00eengele e ro\u015fu, iar venele albastre? - Doctor Expres\",\"isPartOf\":{\"@id\":\"https:\/\/doctorexpres.ro\/#website\"},\"primaryImageOfPage\":{\"@id\":\"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/#primaryimage\"},\"image\":{\"@id\":\"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/#primaryimage\"},\"thumbnailUrl\":\"http:\/\/doctorexpres.ro\/wp-content\/uploads\/2017\/08\/red_veins_and_blue_veins__by_alan_jacob_nny_cade-d5k7zym.png\",\"datePublished\":\"2022-09-02T07:50:27+00:00\",\"dateModified\":\"2022-09-02T07:50:42+00:00\",\"author\":{\"@id\":\"https:\/\/doctorexpres.ro\/#\/schema\/person\/28f79c329d023ab5816a649c97121076\"},\"breadcrumb\":{\"@id\":\"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/#breadcrumb\"},\"inLanguage\":\"ro-RO\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"ro-RO\",\"@id\":\"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/#primaryimage\",\"url\":\"http:\/\/doctorexpres.ro\/wp-content\/uploads\/2017\/08\/red_veins_and_blue_veins__by_alan_jacob_nny_cade-d5k7zym.png\",\"contentUrl\":\"http:\/\/doctorexpres.ro\/wp-content\/uploads\/2017\/08\/red_veins_and_blue_veins__by_alan_jacob_nny_cade-d5k7zym.png\",\"width\":460,\"height\":277},{\"@type\":\"BreadcrumbList\",\"@id\":\"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Prima pagin\u0103\",\"item\":\"https:\/\/doctorexpres.ro\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"De ce s\u00eengele e ro\u015fu, iar venele albastre?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/doctorexpres.ro\/#website\",\"url\":\"https:\/\/doctorexpres.ro\/\",\"name\":\"Doctor Expres\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/doctorexpres.ro\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"ro-RO\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/doctorexpres.ro\/#\/schema\/person\/28f79c329d023ab5816a649c97121076\",\"name\":\"Doctor Expres\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ro-RO\",\"@id\":\"https:\/\/doctorexpres.ro\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/709aeca982fb42c2713466b8227364d5?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/709aeca982fb42c2713466b8227364d5?s=96&d=mm&r=g\",\"caption\":\"Doctor Expres\"},\"sameAs\":[\"http:\/\/www.doctorexpres.ro\"],\"url\":\"http:\/\/doctorexpres.ro\/index.php\/author\/doctor-expres\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"De ce s\u00eengele e ro\u015fu, iar venele albastre? - Doctor Expres","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":"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/","og_locale":"ro_RO","og_type":"article","og_title":"De ce s\u00eengele e ro\u015fu, iar venele albastre? - Doctor Expres","og_description":"Te-ai \u00eentrebat vreodat\u0103 de ce s\u00eengele e ro\u015fu? Sau de ce venele de sub piele s\u00eent albastre? Totul este legat","og_url":"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/","og_site_name":"Doctor Expres","article_published_time":"2022-09-02T07:50:27+00:00","article_modified_time":"2022-09-02T07:50:42+00:00","og_image":[{"width":460,"height":277,"url":"http:\/\/doctorexpres.ro\/wp-content\/uploads\/2017\/08\/red_veins_and_blue_veins__by_alan_jacob_nny_cade-d5k7zym.png","type":"image\/png"}],"author":"Doctor Expres","twitter_card":"summary_large_image","twitter_misc":{"Scris de":"Doctor Expres","Timp estimat pentru citire":"2 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/#article","isPartOf":{"@id":"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/"},"author":{"name":"Doctor Expres","@id":"https:\/\/doctorexpres.ro\/#\/schema\/person\/28f79c329d023ab5816a649c97121076"},"headline":"De ce s\u00eengele e ro\u015fu, iar venele albastre?","datePublished":"2022-09-02T07:50:27+00:00","dateModified":"2022-09-02T07:50:42+00:00","mainEntityOfPage":{"@id":"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/"},"wordCount":432,"image":{"@id":"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/#primaryimage"},"thumbnailUrl":"http:\/\/doctorexpres.ro\/wp-content\/uploads\/2017\/08\/red_veins_and_blue_veins__by_alan_jacob_nny_cade-d5k7zym.png","keywords":["catena proteica","clorofila","culoarea sangelui","cupru","dioxid de carbon","Dr. Sergio Pi\u00f1a-Oviedo","fier","hem","hemoglobina","oxigen","talasemie"],"articleSection":["Inim\u0103 \u015fi sistem circulator","Utile"],"inLanguage":"ro-RO"},{"@type":"WebPage","@id":"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/","url":"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/","name":"De ce s\u00eengele e ro\u015fu, iar venele albastre? - Doctor Expres","isPartOf":{"@id":"https:\/\/doctorexpres.ro\/#website"},"primaryImageOfPage":{"@id":"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/#primaryimage"},"image":{"@id":"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/#primaryimage"},"thumbnailUrl":"http:\/\/doctorexpres.ro\/wp-content\/uploads\/2017\/08\/red_veins_and_blue_veins__by_alan_jacob_nny_cade-d5k7zym.png","datePublished":"2022-09-02T07:50:27+00:00","dateModified":"2022-09-02T07:50:42+00:00","author":{"@id":"https:\/\/doctorexpres.ro\/#\/schema\/person\/28f79c329d023ab5816a649c97121076"},"breadcrumb":{"@id":"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/#breadcrumb"},"inLanguage":"ro-RO","potentialAction":[{"@type":"ReadAction","target":["http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/"]}]},{"@type":"ImageObject","inLanguage":"ro-RO","@id":"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/#primaryimage","url":"http:\/\/doctorexpres.ro\/wp-content\/uploads\/2017\/08\/red_veins_and_blue_veins__by_alan_jacob_nny_cade-d5k7zym.png","contentUrl":"http:\/\/doctorexpres.ro\/wp-content\/uploads\/2017\/08\/red_veins_and_blue_veins__by_alan_jacob_nny_cade-d5k7zym.png","width":460,"height":277},{"@type":"BreadcrumbList","@id":"http:\/\/doctorexpres.ro\/index.php\/2022\/09\/02\/de-ce-singele-e-rosu-iar-venele-albastre\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Prima pagin\u0103","item":"https:\/\/doctorexpres.ro\/"},{"@type":"ListItem","position":2,"name":"De ce s\u00eengele e ro\u015fu, iar venele albastre?"}]},{"@type":"WebSite","@id":"https:\/\/doctorexpres.ro\/#website","url":"https:\/\/doctorexpres.ro\/","name":"Doctor Expres","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/doctorexpres.ro\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"ro-RO"},{"@type":"Person","@id":"https:\/\/doctorexpres.ro\/#\/schema\/person\/28f79c329d023ab5816a649c97121076","name":"Doctor Expres","image":{"@type":"ImageObject","inLanguage":"ro-RO","@id":"https:\/\/doctorexpres.ro\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/709aeca982fb42c2713466b8227364d5?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/709aeca982fb42c2713466b8227364d5?s=96&d=mm&r=g","caption":"Doctor Expres"},"sameAs":["http:\/\/www.doctorexpres.ro"],"url":"http:\/\/doctorexpres.ro\/index.php\/author\/doctor-expres\/"}]}},"_links":{"self":[{"href":"http:\/\/doctorexpres.ro\/index.php\/wp-json\/wp\/v2\/posts\/7058","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/doctorexpres.ro\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/doctorexpres.ro\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/doctorexpres.ro\/index.php\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/doctorexpres.ro\/index.php\/wp-json\/wp\/v2\/comments?post=7058"}],"version-history":[{"count":4,"href":"http:\/\/doctorexpres.ro\/index.php\/wp-json\/wp\/v2\/posts\/7058\/revisions"}],"predecessor-version":[{"id":8493,"href":"http:\/\/doctorexpres.ro\/index.php\/wp-json\/wp\/v2\/posts\/7058\/revisions\/8493"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/doctorexpres.ro\/index.php\/wp-json\/wp\/v2\/media\/7522"}],"wp:attachment":[{"href":"http:\/\/doctorexpres.ro\/index.php\/wp-json\/wp\/v2\/media?parent=7058"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/doctorexpres.ro\/index.php\/wp-json\/wp\/v2\/categories?post=7058"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/doctorexpres.ro\/index.php\/wp-json\/wp\/v2\/tags?post=7058"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}