POTENCIALES DE ACCIÓN NEURONAL
Authored by Dariel Díaz
Biology
12th Grade
15 Questions
Used 138+ times
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
El potencial de acción neuronal es la base de los impulsos nerviosos y se relaciona con cambios transitorios de las cargas eléctricas a ambos lados de la membrana.
Verdadero
Falso
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El potencial de membrana en reposo es negativo porque afuera de la célula hay más proteínas positivas que adentro.
Verdadero
Falso
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
El funcionamiento asimétrico de la bomba sodio-potasio contribuye a que el potencial de membrana en reposo sea negativo: más cargas negativas dentro de la célula que afuera.
Verdadero
Falso
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El potencial umbral es el valor mínimo de potencial de membrana requerido para que un estímulo desencadene un potencial de acción.
Verdadero
Falso
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
En la fase de despolarización se abren los canales de potasio, saliendo este ión de la célula y cambiando el potencial de membrana de negativo a positivo.
Verdadero
Falso
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
En la fase de repolarización actúan los canales de sodio, que al abrirse entra este ion a la célula provocando un cambio de polaridad de positivo a negativo.
Verdadero
Falso
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En la etapa de hiperpolarización el potencial de acción se hace más positivo que el potencial de membrana en reposo (PMR).
Verdadero
Falso
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