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Questions and Answers
Cal destas opcións describe mellor a función do tecido muscular?
Cal destas opcións describe mellor a función do tecido muscular?
- Proporciona soporte estrutural ao organismo.
- Protexe os órganos internos contra danos.
- Almacena nutrientes e enerxía.
- Realiza movementos e contraccións do corpo. (correct)
Que tipo de tecido muscular é responsable dos movementos involuntarios?
Que tipo de tecido muscular é responsable dos movementos involuntarios?
- Tecido muscular esquelético.
- Tecido muscular cardíaco.
- Tecido muscular liso. (correct)
- Tecido muscular estriado.
Que característica é exclusiva do tecido muscular cardíaco?
Que característica é exclusiva do tecido muscular cardíaco?
- Ten un control voluntario.
- Está en contacto directo co sistema nervioso central.
- Ten unións especializadas chamadas discos intercalados. (correct)
- Ten células que se dividen rapidamente.
Cal é a principal proteína que permite a contracción dos músculos esqueléticos?
Cal é a principal proteína que permite a contracción dos músculos esqueléticos?
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Que tipo de tecido muscular presenta unha estrutura estriada?
Que tipo de tecido muscular presenta unha estrutura estriada?
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Study Notes
Muscle Tissue Histology
- Muscle tissue is divided into three main types: skeletal, cardiac, and smooth muscle.
- Skeletal muscle is striated and under voluntary control, primarily responsible for movement and posture.
- Cardiac muscle is involuntary and striated, found exclusively in the heart, responsible for pumping blood.
- Smooth muscle is non-striated and involuntary, located in walls of hollow organs such as blood vessels and the gastrointestinal tract.
- Muscle fibers are elongated cells known as myocytes, capable of contraction.
- Each muscle type has unique histological features that distinguish them:
- Skeletal muscle fibers are multi-nucleated and contain organized sarcomeres.
- Cardiac muscle fibers are typically single-nucleated with intercalated discs for communication between cells.
- Smooth muscle cells are spindle-shaped with a single nucleus and lack striations.
- Muscle tissue plays crucial roles in movement, posture maintenance, and vital organ functions, including the heart and digestive tract.
- Histological analysis involves staining techniques to enhance visualization of structures, aiding in diagnosis of muscle disorders.
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