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Muscle Anatomy

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    skeletal muscle anatomy
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  • what type of muscles are striated?
    skeletal and cardiac
  •  15
  • what type of muscles are contracted voluntarily?
    skeletal
  •  15
  • what is the outside of the entire skeletal muscle fibers called?
    epimysium
  •  15
  • what surrounds the muscle fascicles?
    perimysium
  •  15
  • what surrounds each muscle fiber?
    endomysium
  •  15
  • what is the name of a muscle cell?
    fiber
  •  15
  • what muscle structure gives muscles their red pigment?
    myoglobin
  •  15
  • what is the contractile unit of muscles?
    sarcomere
  •  15
  • what is the thin filament?
    actin
  •  15
  • what is the thick filament?
    myosin
  •  15
  • what structure has active sites that allow myosin head binding during contraction?
    actin
  •  15
  • what structures stores and releases calcium?
    sarcoplasmic reticulum (aka SR)
  •  15
  • what structures transmits electrical impulses?
    transverse tubules (aka t tubules)
  •  15
  • what is the smallest structure in muscles?
    myofilaments
  •  15
  • what accounts for 80% of muscle cell volume?
    myofibrils
  •  15
  • what stores glycogen?
    glycosomes
  •  15