{"id":81219,"date":"2018-05-16T11:14:09","date_gmt":"2018-05-16T11:14:09","guid":{"rendered":"http:\/\/humanitasnet-new.local\/enciclopedia\/arterele-si-sistemul-arterial\/"},"modified":"2018-05-16T11:14:09","modified_gmt":"2018-05-16T11:14:09","slug":"arterele-si-sistemul-arterial","status":"publish","type":"enciclopedia","link":"https:\/\/humanitas-net.humweb.webiz.team\/ro\/wiki\/arterele-si-sistemul-arterial\/","title":{"rendered":"Arterele \u0219i sistemul arterial"},"content":{"rendered":"<h2 id=\"ce-sunt-arterele-si-ce-este-sistemul-arterial\">Ce sunt arterele \u0219i ce este sistemul arterial?<\/h2>\n<p>Arterele sunt vase de s\u00e2nge care sunt responsabile pentru transportarea s\u00e2ngelui de la inim\u0103 la alte organe \u0219i \u021besuturi din corpul uman (for\u021b\u0103 centripet\u0103). Cu excep\u021bia arterelor pulmonare, care transport\u0103 s\u00e2nge neoxigenat \u0219i produse reziduale, toate celelalte artere transport\u0103, \u00een general, s\u00e2nge oxigenat. Pere\u021bii arteriali sunt compu\u0219i din trei straturi, aranja\u021bi unul peste cel\u0103lalt; cel mai exterior strat cunoscut drept tunica externa (\u021besutul conjunctiv realizat din fibre de colagen), \u021besutul conjunctive cunoscut ca \u0219i tunica media (realizat din celulele moi de mu\u0219chi \u0219i \u021besut elastic) \u0219i stratul cel mai interior, cunoscut ca \u0219i tunica intima (realizat, \u00een principal, din celule endoteliale).<\/p>\n<p>\u00cen func\u021bie de diametru, arterele pot fi mari, medii sau mici. Dac\u0103 diametrul este mai mic de 3 mm, acestea sunt numite arteriole. Arteriolele sunt vase mici care compun p\u0103r\u021bile terminale ale ramurilor arterelor \u0219i acelea care preced capilarele corespunz\u0103toare.<\/p>\n<p>Sistemul arterial este parte a sistemului circulator, f\u0103c\u00e2nd referire la tensiunea arterial\u0103. Structurile principale care formeaz\u0103 sistemul includ:<\/p>\n<p>Arterele pulmonare<\/p>\n<p>Arterele sistemice<br \/>\nAorta<\/p>\n<h2 id=\"arterele-pulmonare\">Arterele pulmonare<\/h2>\n<p>Arterele pulmonare sunt responsabile pentru transportarea s\u00e2ngelui neoxigenat \u0219i a produselor reziduale de la inim\u0103 c\u0103tre pl\u0103m\u00e2ni. \u00cempreun\u0103 cu venele pulmonare, acestea formeaz\u0103 circula\u021bia pulmonar\u0103 (numit\u0103 \u0219i \u201dcircula\u021bia inim\u0103 &#8211; pl\u0103m\u00e2ni\u201d sau \u201dcircula\u021bia mic\u0103\u201d) sau parte din sistemul circulator. Circula\u021bia pulmonar\u0103 este parte din sistemul cardiovascular \u0219i este responsabil\u0103 pentru transportarea s\u00e2ngelui neoxigenat \u0219i a produselor reziduale de la toate organele \u0219i \u021besuturile corpului departe de inim\u0103, c\u0103tre pl\u0103m\u00e2ni \u0219i \u00eenapoierea s\u00e2ngelui oxigenat c\u0103tre inim\u0103, c\u00e2t \u0219i a substan\u021belor nutritive \u00eembun\u0103t\u0103\u021bite c\u0103tre toate organele \u0219i \u021besuturile.<\/p>\n<h2 id=\"arterele-sistemice\">Arterele sistemice<\/h2>\n<p>Arterele sistemice sunt vasele de s\u00e2nge responsabile pentru transportarea s\u00e2ngelui oxigenat \u0219i a substan\u021belor nutritive de la inim\u0103 la toate organele \u0219i \u021besuturile din corp. Pieptul \u0219i abdomenul primesc s\u00e2nge direct de la mai multe din bra\u021bele laterale, \u00een timp ce p\u0103r\u021bile periferice ale corpului (cap, g\u00e2t, pelvis, membrele inferioare \u0219i superioare) primesc s\u00e2nge de la arterele mari emise din aort\u0103 (arter\u0103 humeral\u0103, arter\u0103 femural\u0103, arter\u0103 carotid\u0103, etc.)<\/p>\n<h2 id=\"aorta\">Aorta<\/h2>\n<p>Aorta este vasul arterial\u0103 elementar al corpului uman. \u00ce\u0219i are origine din ventriculul st\u00e2ng al inimii, printr-o deschiz\u0103tur\u0103 (reglementat\u0103 de valva aortic\u0103), care apare o scurt\u0103 distan\u021b\u0103 (cunoscut\u0103 ca \u201daort\u0103 ascendent\u0103\u201d) \u0219i apoi se \u00eentoarce pentru a forma arcul aortic (sau arcul sistemic). Continu\u0103 s\u0103 formeze aorta descendent\u0103 care este compus\u0103 din dou\u0103 por\u021biuni, aorta toracic\u0103 \u0219i aorta abdominal\u0103, \u0219i apoi se opre\u0219te \u00een fa\u021ba vertebrei lombare IV, unde se bifurc\u0103 \u00een dou\u0103 artere iliace comune.<\/p>\n<h2 id=\"ce-functii-au-arterele-si-sistemul-arterial\">Ce func\u021bii au arterele \u0219i sistemul arterial?<\/h2>\n<p>Arterele sunt responsabile pentru transportarea s\u00e2ngelui de la inim\u0103 \u0219i direc\u021bionarea acestuia c\u0103tre toate \u021besuturile \u0219i organele corpului. Sistemul arterial este extrem de important \u00een transportarea oxigenului \u0219i a substan\u021belor nutritive c\u0103tre toate celulele \u0219i \u021besuturile, c\u00e2t \u0219i pentru eliminarea dioxidului de carbon \u0219i produselor reziduale. Ajut\u0103 \u0219i la men\u021binerea echilibrului de proteine \u0219i se asigur\u0103 de faptul c\u0103 sistemul imunitar nu este compromis.<\/p>\n<p>Complica\u021biile grave, cum ar fi infarctul miocardic \u0219i atacul cerebral, sunt cunoscute ca fiind cauze principale pentru deces, ca \u0219i rezultat direct al sistemului arterial deteriorat.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"featured_media":0,"parent":0,"template":"","Example":[1792],"class_list":["post-81219","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>Arterele \u0219i sistemul arterial - 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=\"Arterele \u0219i sistemul arterial - Humanitas.net\" \/>\n<meta property=\"og:description\" content=\"Ce sunt arterele \u0219i ce este sistemul arterial? 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