{"id":5180,"date":"2021-02-12T12:49:48","date_gmt":"2021-02-12T12:49:48","guid":{"rendered":"https:\/\/www.healthy-heart.org\/miten-sydan-toimii\/"},"modified":"2021-02-16T11:25:22","modified_gmt":"2021-02-16T11:25:22","slug":"miten-sydan-toimii","status":"publish","type":"page","link":"https:\/\/www.healthy-heart.org\/fi\/sydamesi\/miten-sydan-toimii\/","title":{"rendered":"Miten syd\u00e4n toimii?"},"content":{"rendered":"![\"\"](\"https:\/\/cdn-endpoint-prev.azureedge.net\/healthy-heart\/2021\/02\/iStock-497342787-1-768x705_FINNISH-350x321.png\")
Syd\u00e4n on jaettu kahteen puoliskoon, joita erottaa lihassein\u00e4m\u00e4 (v\u00e4lisein\u00e4). Kummassakin puoliskossa on kaksi onteloa: ylh\u00e4\u00e4ll\u00e4 oleva eteinen ja alhaalla oleva kammio. Syd\u00e4men oikea puoli vastaanottaa v\u00e4h\u00e4happista verta kehosta laskimoiksi kutsuttujen verisuonten kautta. Syd\u00e4n pumppaa t\u00e4m\u00e4n veren keuhkoihin, jossa se rikastuu hapella. Syd\u00e4men vasen puoli vastaanottaa t\u00e4m\u00e4n veren keuhkoista ja pumppaa sit\u00e4 kaikille kehon elimille valtimoiksi kutsuttujen verisuonten kautta. Se alkaa suurimmasta valtimosta, jota kutsutaan aortaksi. Eteisten ja kammioiden v\u00e4lisi\u00e4 l\u00e4ppi\u00e4 kutsutaan eteis-kammiol\u00e4piksi (hiippa- eli mitraalil\u00e4pp\u00e4 vasemmalla, kolmipurje- eli trikuspidaalil\u00e4pp\u00e4 oikealla). Ne est\u00e4v\u00e4t verta virtaamasta v\u00e4\u00e4r\u00e4\u00e4n suuntaan. Keuhkovaltimol\u00e4pp\u00e4 ja aorttal\u00e4pp\u00e4 ohjaavat veren ulostuloa kammioista; ensiksi mainittu oikeasta kammiosta ja j\u00e4lkimm\u00e4inen vasemmasta kammiosta. L\u00e4p\u00e4t avautuvat, kun kammiossa saavutetaan tietty paine, jolloin veri p\u00e4\u00e4see virtaamaan keuhkoihin (oikeasta kammiosta) tai kehoon ja sen elimiin (vasemmasta kammiosta).<\/p>\n
Syd\u00e4n on lihas, joka pumppaa 60\u201380 kertaa minuutissa koko el\u00e4m\u00e4si ajan. Siksi se tarvitsee suuria m\u00e4\u00e4ri\u00e4 happea ja ravinteita toimiakseen kunnolla. Sepelvaltimot toimittavat syd\u00e4meen sen tarvitseman veren.<\/p>\n","protected":false},"excerpt":{"rendered":"
Syd\u00e4n on jaettu kahteen puoliskoon, joita erottaa lihassein\u00e4m\u00e4 (v\u00e4lisein\u00e4). Kummassakin puoliskossa on kaksi onteloa: ylh\u00e4\u00e4ll\u00e4 oleva eteinen ja alhaalla oleva kammio. Syd\u00e4men oikea puoli vastaanottaa v\u00e4h\u00e4happista verta kehosta laskimoiksi kutsuttujen verisuonten kautta. Syd\u00e4n pumppaa t\u00e4m\u00e4n veren keuhkoihin, jossa se rikastuu hapella. Syd\u00e4men vasen puoli vastaanottaa t\u00e4m\u00e4n veren keuhkoista ja pumppaa sit\u00e4 kaikille kehon elimille valtimoiksi […]<\/p>\n","protected":false},"author":1,"featured_media":5196,"parent":5275,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"categories":[98],"tags":[],"class_list":["post-5180","page","type-page","status-publish","has-post-thumbnail","hentry","category-sydamesi"],"acf":[],"yoast_head":"\n
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