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15 Cards in this Set
- Front
- Back
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Three types of muscle tissue
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Skeletal
Cardiac Smooth |
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Functions of muscle tissue
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producing body movements
stabilizing body positions regulating organ volumes movements of substances within body produce heat |
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Properties of muscle tissue
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excitability (respond to chemicals released)
conductivity(contact nearby muscle cells) contractility(ability to generate force) extensibility(ability to stretch) elasticity(ability to return to original state) |
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Superficial fascia
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loose connective tissue and fat underlying the skin (hypodermis)
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Deep fascia
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dense irregular connective tissue around muscle. Becomes tendon that holds the muscle to the bone. (epimysium)
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Perimysium
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surrounds individual fasicles (bundles of 10-100 muscle fibers)
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Endomysium
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separates individual muscle fibers. Contains blood vessels.
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Tendons
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dense irregular connective tissue that attached muscles to periosteum of bone.
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Myofibrils
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contractile protein in muscle fiber. composed of protein strands called filaments.
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Sarcolemma
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muscle cell membrane
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Sarcoplasm
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filled with myofibrils. also contain glycogen, mitochondria and myoglobin.
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Transverse Tubules
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continuation of the sarcolemma. filled with extracellular fluid. carry nerve impulses down into the cell.
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Sarcoplasm Reticulum (SR)
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system of tubular sacs in non-muscle cells.
wrapped around individual myofibrils. stores Ca++ in relaxed muscle and releases it to trigger contractions |
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Terminal cisterns
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ends of sarcoplasm reticulum
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Myofilaments
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contractile proteins that make up myofibrils
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