
CONTRACCION MUSCULAR
Authored by Randolfh chavarria
Health Sciences
University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cuál es la proporción aproximada de músculo esquelético en el cuerpo humano?
30%
40%
50%
60%
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qué componente del sarcolema es responsable de su rigidez estructural?
Membrana plasmática
Fibrillas de colágeno
Capa de material polisacárido
Todas las anteriores
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qué elemento se encuentra en mayor cantidad en el sarcoplasma?
Sodio
Potasio
Calcio
Magnesio
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cuál de los siguientes es un componente del retículo sarcoplásmico?
Mitocondria
Túbulos T
Fibras nerviosas
Placas terminales motoras
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El neurotransmisor involucrado en la contracción muscular es:
Dopamina
Acetilcolina
Serotonina
GABA
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cuál es la función principal de los iones calcio en la contracción muscular?
Estimular la síntesis de ATP
Relajar los filamentos de miosina
Permitir la unión de actina y miosina
Activar enzimas en el sarcoplasma
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Los filamentos de miosina y actina se deslizan entre sí por la acción de:
Los puentes cruzados
Los discos Z
Las moléculas de G-actina
Las moléculas de tropomiosina
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