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ID number:898365
Author:
Evaluation:
Published: 29.04.2008.
Language: Latvian
Level: Elementary school
Literature: n/a
References: Not used
Extract

Elpošanas orgānu sistēma. Cilvēka elpošanas orgānu sistēmas galvenais uzdevums ir nodrošināt pastāvīgu gāzu apmaiņu starp organismu un ārējo vidi. Pateicoties plaušu audiem, organismā tiek uzņemts skābeklis un izdalīta ogļskābā gāze. Šī gāzu apmaiņa ir viens no galvenajiem dzīvības uzturēšanas procesiem. Ik vienai organisma šūnai, lai tā spētu funkcionēt, ir nepieciešamas skābeklis. Ja kāda iemesla dēj organisms 4-5 minūtes nesaņem skābekli, audu šūnās var rasties neatgriezeniskas izmaiņas, tās aiziet bojā. Var iestāties pat nāve. …

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