Músculo Flashcards

1
Q

como se distribuye el peso corporal?

A

Músculo esquelético: 40%

M liso y cardiaco 10%

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2
Q

Quien rodea por completo al músculo?

A

epimisio

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3
Q

por qué estructuras esta formado el músculo?

A

fascículos

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4
Q

que rodea a los fascículos?

A

perimisio

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5
Q

define una fibra muscular

A

compuesto de miofibrillas de actina y miosina

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6
Q

quién rode a la fibra muscular?

A

endomisio

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7
Q

Membrana celular del músculo

A

sarcolema

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8
Q

REL del músculo

A

retículo sarcoplásmico

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9
Q

citoplasma del músculo

A

sarcoplasma

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10
Q

Isotrópico

A

la luz pasa

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11
Q

Anisotrópico

A

No pasa la luz

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12
Q

Qué define la sarcomera?

A

distancia entre dos líneas Z

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13
Q

Quien compone a los filamentos delgados?

A

Actina, tropomiosina y troponina

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14
Q

divisiones de la troponina

A

T: unida a la tropomiosina
C: unión a calcio
I: inhibe sitio union de actina

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15
Q

punto de inserción de los filamentos delgados

A

Disco o línea Z

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16
Q

punto de inserción de los filamentos gruesos

A

Linea M

17
Q

componente filamentos gruesos

A

Miosina

18
Q

cadenas de la miosina

A

ligera y pesada

19
Q

Características Banda I

A

es clara, solo tiene filamentos delgados, isotrópica

20
Q

Características Banda A

A

contienen filamentos gruesos y delgados, que estan sobre puestos unos sobre otros y por eso son anisotrópicos

21
Q

Función tropomiosina

A

bloquea el sitio activo de actina