Dendriten Aufnahme von
Erregungenvon Rezeptoren oder anderen
Nervenzellen
Soma enthält Zellkern und
wichtige Organellen Ort Stoffwechsel
,
Axon wird elektrische
Erregung weitergeleitet
Axon über
Synapse Übertragung elektrischer Erregung
Ruhepotential :
-
UnterschiedlichePermeabilitätender Ionen :
↳ Kt Ionen sehr
gut durchlässig
- :
↳ a- Ionen halb so
gut durchlässig
-
:
Nat Ionen kaum
durchlässig
↳ - :
A-
durchlässig
Ionen nicht
↳ -
:
-
Kt -
Ionen Wandern
aufgrund des
Konzentrationsgefälle und der
guten Permeabilität nach außen
↳
Ladungsgradient (innennegativer als außen )
3
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