EXITACION MUSCULO ESQUETICO
Quiz
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Health Sciences
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University
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Practice Problem
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Medium
Randolfh chavarria
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10 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Qué tipo de fibras nerviosas inervan las fibras del músculo esquelético?
Fibras nerviosas no mielinizadas pequeñas
Fibras nerviosas mielinizadas grandes
Fibras nerviosas autónomas
Fibras nerviosas sensoriales
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Qué es una unión neuromuscular?
Una conexión entre dos neuronas
Una conexión entre una neurona y una fibra muscular
Una conexión entre dos fibras musculares
Una conexión entre el cerebro y la médula espinal
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Qué neurotransmisor se libera en la unión neuromuscular para excitar la fibra muscular?
Dopamina
Serotonina
GABA
Acetilcolina
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Cuántas vesículas de acetilcolina se liberan típicamente cuando llega un impulso nervioso?
Aproximadamente 50
Aproximadamente 125
Aproximadamente 200
Aproximadamente 300
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Cuál es el rol de la acetilcolinesterasa en la unión neuromuscular?
Sintetiza acetilcolina
Transporta acetilcolina
Destruye acetilcolina
Reabsorbe acetilcolina
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Qué efecto tienen los canales de calcio en la terminación nerviosa?
Inhiben la liberación de acetilcolina
Facilitan la liberación de acetilcolina
Destruyen la acetilcolina
Reabsorben la acetilcolina
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Qué efecto tiene la acetilcolina sobre los canales iónicos en las membranas postsinápticas?
Los cierra
Los abre
Los modifica
Los destruye
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