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ID number:207511
 
Evaluation:
Published: 27.12.2005.
Language: Latvian
Level: Elementary school
Literature: n/a
References: Not used
Extract

Cilvēka organismā ir apmēram 4,5 litri asiņu. Krūškurvī novietotā sirds visu mūžu sūknē asinis, apgādā ar tām visas ķermeņa daļas un uztur mūsu dzīvību. Sirds ir tik spēcīgs sūknis, ka nav vajadzīga pat minūte, lai asiņu šūna izceļotu par asinsvadiem, asinis nes skābekli un sagremotās barības vielas uz visām ķermeņa daļām. Asinis arī aiznes kaitīgos vielmaiņas galaproduktus, piemēram, ogļskābo gāzi.…

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