Nervioso
Quiz
•
Biology
•
University
•
Practice Problem
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Medium
Maricarmen Lara Rodríguez
Used 11+ times
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30 questions
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1.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
Durante el estado de reposo de la neurona
El sodio se concentra en el exterior de la célula.
La bomba de sodio potasio mantiene el gradiente de concentración.
Los aniones se concentran en la cara externa de la membrana.
Todas las anteriores
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
La fase de repolarización del potencial de acción depende del aumento de la permeabilidad de la membrana al paso de iones
Mg2+
Na+
K+
Cl-
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Un estímulo umbral es aquel que posee la
Intensidad mínima necesaria para generar descarga eléctrica.
Intensidad mínima necesaria para generar apertura de canales de K.
Intensidad suficiente para abrir canales de Cl
Mayor intensidad para abrir canales de Na.
4.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
La fase de descenso o repolarización del potencial de acción se debe a la
Apertura de canales de K+
Inactivación de canales de Na+
Activación de la bomba sodio-potasio.
Todas las anteriores
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Conforman los dos tipos de células importantes del sistema nervioso
Neurona y glia
Neurona y microglia
Neurona y macroglia
Neurona y astrocitos
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Señale la opción correcta referida a las células de Schwann:
Produce la mielina en el sistema nervioso central
Solo acompaña a las fibras nerviosas mielínicas
Produce la mielina en el sistema nervioso periférico
Carece de membrana basal
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Parte interna del cerebro
Sustancia beige
Sustancia gris
Sustancia parda
Sustancia blanca
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