Músculo Flashcards

1
Q

Músculos

A

Cardiaco
Liso
**px leiomioma; sangrado uterino normal
Esquelético

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2
Q

Músculo esquelético

A

Unidad funcional; sarcómero
Rabdo-mio
Adyacente al esqueleto (lengua)
Estriado

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3
Q

Mesenquimal y epitelial

A

Sarcoma (maligno)

Y

Carcinoma (maligno)

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4
Q

Líneas y bandas

A

Línea Z: delimita unidad funcional
Línea M: meriomiosina
Banda I: solo actina (delimita sarcómero y sarcómero)
Banda A: miosina y actina (+oscura)

Varios sarcómeros: miofibrilla/fibrilla muscular

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5
Q

Capas

A

Perimisio
Epimisio
Endomisio

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6
Q

Diferencia de músculos

A

Estriado:
- alargado
- multinucleado periferia
- voluntario

Cardiaco:
- núcleo al centro
- pantalón
- involuntaria

Liso:
- alargado
- núcleo central
- contracción lenta involuntaria
- no inicio o fin

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7
Q

Lugares de cada músculo

A

Estriado:
- músculo esquelético
- lengua
- esófago 1/3 superior

Cardiaco:
- corazón

Liso:
- víseras huecas
- vasos sanguíneos
- esófago 2/3 inferior
Vejiga, intestino, estómago

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8
Q

Fibras musculares (tipos)

A

Rojas - I
Intermedias - IIa
Blancas - IIb

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9
Q

Fibras Rojas

A

I
Contracción lenta
Poca fatigación
Resistencia

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10
Q

Fibras Intermedias

A

IIa
Rápidas y lentas

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11
Q

Fibras blancas

A

IIb
Rápidas
Fatigables rápido

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12
Q

Contracción muscular

A

Miosina
Actina
- Tropomiosina
- Troponina

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13
Q

Músculo cardiaco

A

Fibras unidas por discos intercalares (estrías)
Función eléctrica homogénea (unidos a actina)
Capilar alrededor

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14
Q

Músculo liso

A

Núcleo alargado
Cuerpo denso en citoplasma
- reticular
- actina
- miosina

Caveola; distribución de Ca+. Contracción

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