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tejido nervioso y muscular

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este documento tiene las caracteristicas del tejido nervioso y muscular, sus componenetes y además imagenes de como se ven en el microscopio

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Tejido muscular
• Caracterizado por células de gran longitud, cuyo carácter
más específico es la presencia de miofibrillas contráctiles
que permiten los movimientos corporales.
• Las células se denominan fibras musculares y en su
citoplasma es donde se encuentran las miofibrillas,
formadas por proteínas de actina y miosina.
• La clasificación de los tejidos musculares se hace
teniendo en cuenta la morfología.

, Tejido muscular. Tipos
• Fibra muscular lisa,
lisa sin estriaciones, con células
uninucleadas, largas y con forma de huso, rodean
órganos internos y su contracción es involuntaria.
• Fibra muscular estriada, en las miofibrillas poseen actina
y miosina lo que les da apariencia estriada:
– Musculo esquelético, mueven el esqueleto y su
contracción es voluntaria.
– Músculo cardiaco, exclusivas del corazón y su
contracción es involuntaria.

, Músculo estriado
Núcleos
periféricos de la
fibra muscular

Bandas claras y
oscuras de los
sarcómeros o
estriaciones
transversales

Document information

School year
5
Uploaded on
May 18, 2023
Number of pages
25
Written in
2022/2023
Type
Presentation
Person
Unknown
$11.09

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