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širdyje esančios keturios ertmės 2 skilveliai ir 2 prieširdžiai
širdis dalijama į dvi puses dešinioji ir kairioji
širdį dengiantis jungiamasis audinys širdiplėvė
širdį dalija į dešiniąją ir kairiąją puses pertvara
viršutinės ertmės, į kurias suteka kraujas prieširdžiai
apatinės ertmės, į kurias suteka kraujas skilveliai
ertmės, į kurias kraujas surenkamas prieširdžiai
ertmės, iš kurių kraujas išstumiamas skilveliai
širdies pusė, kurioje raumuo storesnis, nes kraujas išstumiamas į visą organizmą kairioji pusė
kraujui neleidžia maišytis pertvara
vožtuvai, esantys tarp prieširdžių ir skilvelių buriniai
vožtuvas, esantis dešinioje širdies pusėje tarp prieširdžio ir skilvelio triburis
vožtuvas, esantis kairioje širdies pusėje tarp prieširdžio ir skilvelio dviburis
vožtuvai, esantys tarp širdies ir iš jos išeinančių kraujagyslių pusmėnuliai
kraujui grįžti atgal į skilvelius neleidžia pusmėnuliai vožtuvai
širdis kasdien susitraukia ... kartų 100000
širdį maitinančios kraujagyslės vainikinės arterijos
širdies raumuo miokardas
Created by: biologija
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