Skeletal/Muscle Function 11.1 – Flashcards
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Transverse T Tubule
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membranous channel extending inward from muscle fiber membrane
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Sacroplasm
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Cytoplasm of muscle fiber
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Fascia
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connective tissue located between adjacent muscles
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Fascia
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connective tissue located between adjacent muscles
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Perimisiyum
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layer of connective tissue that seperates a muscle into small bundles called fasicles
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Sarcolemma
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plasma membrane of muscle fiber
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Epimysium
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layer of connective tissue that surround skeletal muscle
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sarcamore
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unit of alternating light and dark striations of Z discs / functional contractile unit within muscle fiber
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Endomysium
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layer of connective tissue that surrounds individual muscle
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Sarcoplasmic Reticulum
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cellular organelle in muscle fiber corresponding to the endoplasmic reticulum
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Tendon
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Cordlike part that attaches muscle to a bone
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Myosin
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protien found with in thick fillament
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Fascile
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a small bundle of muscle fibers within a muscle
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A ( anistropic ) band
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dark band of thick filaments and some overlap of thin filaments
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I (isotropic ) band
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light band of thin filaments
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H Zone ( band)
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light band in middle of A band
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M Line
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dark line in middle of H zone
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Z Disc
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thin and elastic filaments anchored at ends of sarcomere
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Agonist (Prime mover)
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muscle primarily responsible for the action (movement)
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Antagonist
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muscle responsible for action in the opposite direction of a prime mover or for resistance to a prime mover
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Synergist
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helper - muscle contraction assist in prime mover
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Fixator
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special type of synergist muscle; muscle contraction will stabilize a joint so another contracting muscle exerts force or something
