Musculo Liso
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Transcript of Musculo Liso
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Músculo LisoMúsculo Cardiaco
Dr. John Araneda Gálvez
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Tipos de músculo liso
• Multiunitario.– Cada fibra puede
contraerse independiente.
– Control por señales nerviosas.
– Ej:Músculo ciliar ojoEl iris del ojoPiloerectores
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Tipos de músculo liso• Unitario:
– Miles de fibras se contraen simultáneamente.
– Membranas celulares conectadas (Gap Junctions)
Ej: Paredes del intestinoConductos biliares
Uréteres, útero. Vasos sanguíneos
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• Filamentos de actina unidos cuerpos densos
• Filamentos de miosina intercalados entre los filamentos de actina.
• Unidades contráctiles.
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Contracción músculo Liso v/s Esquelético
• M.L. Contracciones tónicas prolongadas.• Ciclo lento puentes cruzados• Gasto energético pequeño• Lento inicio de contracción y relajación.• Mayor fuerza máxima de contracción• Mayor % de acortamiento.• Mecanismo de cerrojo contracción
mantenida.
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Contracción y calcio• Ca+ se une a
Calmodulina.
• Este complejo se une a Miosina cinasa E fosforilante y la activa.
• Fosforilada se une a la actina
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Fibra muscular estriada cardíaca
• Discos intercalados entre células musculares.
• Sincisio el P.Acción se propaga de una célula a otra.
• Fascículo AV conduce impulsos desde A. a V.
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Potencial de acción Músculo cardíaco
K+ Na+ Ca+ k+
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Ciclo Cardiaco
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Ciclo Cardiaco
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Ciclo Cardiaco
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Biceps
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Biceps en
máquina
universal polea
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Biceps con mancuernas
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Músculo supinado
r
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Biceps Alternos
con supinación
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Biceps Alternos
con pronación
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Tríceps
Extensiones en polea
alta agarre en
supinación.
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Tríceps
Extensiones alternadas en polea
alta agarre en
supinación.
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Tríceps
Press Francés en
banco plano
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Tríceps
Press Francés en banco plano con mancuernas
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Tríceps con peso corporal
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TricepsPress posterior
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TricepsPress frontal con barra
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Trapecio y deltoides
Abducción de brazos
con mancuerna
s
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Trapecio y deltoides
Abducción de brazos
con mancuerna
s
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Press Banca
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Flexiones de brazos
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PectoralesAperturas con mancuernas
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Ejecución del ejercicio
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Pull-Over con mancuerna
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Flexiones de brazos en barra
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Remo
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Abdominales
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Remo horizontal con barra manos en pronación
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Oblicuos
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Espalda
Peso MuertoPiernas
semirígidas
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Peso Muerto
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Peso Muerto (Sumo)
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Dorsales
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Flexores de cadera
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Cuadriceps
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Isquiotibiales
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Isquiotibiales
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Elevación de caderas
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Sóleo
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Estocadas
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Glúteos
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