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30 Cards in this Set
- Front
- Back
Basic tissue is responsible for locomotion of the individual, movement of various parts of t the body |
Muscle tissue |
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Are often referred as muscle fibers; individually enveloped by basal lamina |
Muscle cells |
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Cell membrane (in muscle cells) |
Sarcolema |
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Cytoplasm (in muscle cells) |
Sarcoplasm |
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Endoplasmic reticulum (in muscle cells) |
Sarcoplasmic reticulum |
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Mitochondria (in muscle cells) |
Sarcosomes |
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3 types of muscle cells (fibers) |
1. Skeletal 2. Smooth 3. Cardiac |
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Contains bundles of very long, multinucleated cells with cross-striations |
Skeletal muscle |
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Name 2 muscle that are voluntary |
1. Skeletal 2. Smooth |
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Collection of numerous muscle fibers that are arranged in groups |
Bundles of fascicle |
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Bundles of fascicle is enveloped by a tough dense irregular connective tissue called... |
Epimysium |
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Each of the fasicles that compromise a muscle is, in turn encased by connective tissue called... ; Where nerve fibers and blood vessel occurs |
Perimysium |
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The numerous muscle fibers that comprise a muscle fassicle are also individually wrapped and supported, external to their basal lamina, a delicate connective tissue called... Where the extracellular fibers are mainly reticular fibers |
Endomysium |
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Myofibril is actually made up of small contractile units called |
Sarcomeres |
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Refers to the regions that spans two z-lines and is about 1.5 to 2 um long in a resting muscle |
Sarcomere |
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Occupy the middle zone of sacromere |
Thick filaments |
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Occupy the peripheral zones of sacromere |
Thin filaments |
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Proteins in muscle filaments |
1. Actin 2. Tropomyosin 3. Troponin 4. Myosin |
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Types of skeletal muscle fibers |
1. Red muscle fibers 2. White muscle fibers 3. Intermediate muscle fibers |
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Smaller and have richer blood supply; has more mitochondria, glycogen granules and myoglobin |
Red muscle fibers |
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A.k.a "fast twitch muscle fibers". They contract faster and more forceful but they fatigue faster |
White muscle fibers |
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Have morphological and physiological characteristics that are in between red and white muscle fibers |
Intermediate muscle fibers |
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Occurs only in the heart. |
Cardiac muscle |
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Cross-striations and is composed of elongated, often branched cells bound to one another at structures called... |
Intercalated discs |
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Serves as anchoring sites for actin filaments |
Fasciae adherentes |
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Bind the cardiac cells together |
Maculae adherens |
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Provide ionic continuity between adjacent cells |
Gap junctions |
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Specialized to initiate and conduct the electrical impulse that controls cardiac contractions |
Purkinje fibers |
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Muscle that compromises the muscular component of the wall and parenchyma of most visceral organs |
Smooth muscle |
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Otherwise known as visceral muscle |
Smooth muscle |