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ID number:324586
 
Author:
Evaluation:
Published: 17.01.2020.
Language: Latvian
Level: Secondary school
Literature: n/a
References: Not used
Extract

Izspried, kādas šo audu uzbūves īpatnības to nodrošina!
Dendrīti- neirona izaugumi, kas vada impulsus uz neirona ķemeni.
Aksons- neirona izaugums, kas vada impulsu prom no neirona ķermeņa.

Nervu sistēmā informācija cirkulē elektrisku signālu veidā. (Impulss jeb potenciāls) Tas ir aptuveni 0,1 voltu liels spriegums 0,001 sekundē. Impulsī pāriet no viena uz citu neironu savienojumu vietās- sinapsēs.
1. Elektro impulss nonāk līdz sinapsei.(Aksona)
2. Tiek izdalīts neiromediators (ķīmiska viela)
3. Neiromediātors šķērso šauro sinaptisko spraugu.(Presinaptiskā jeb noraidošā rada postsinaptiskajai jeb uztverošajai membrānai jaunu impulsu vai arī kavē tā rašanos) (Dendrīta)

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