Potencial de membrana en reposo Flashcards

1
Q

Cel exitables?

A

Neuronas
musculares
endocrinas

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2
Q

Que es voltaje?

A

diferencia de carga entre dos lugares

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3
Q

Que es potencial de membrana?

A

dif de carga de la membrana entre el int y ext

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4
Q

Como se mantiene la carga negativa en el interior de la celula?

A

bomba sodio potasio
dif de cargas de los iones
aniones intracelulares son impermeables

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5
Q

Principal cation y anion extracelular y intra celular?

A

Intra C:- K / A- proteinas y PO-4
Extra C: Na / A: Cl HCO3-

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6
Q

Que es potencial de equilibrio?

A

cuando un solo ion esta en equilibrio

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7
Q

Cuales son los iones mas permeables

A

NA y K

K es aun mas permeable

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8
Q

Cual es el potencial de equilibrio de los iones ?

A

Na= 67
K= -96
-Cl=-79
Ca= 122

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9
Q

Cual es el potencial de reposo ?

A

-40 a -90mV

-70mV

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