The sliding mechanism of myofilaments works when
A) the filaments detach from the muscle tendon.
B) the myosin heads of the thick filaments bind to active sites of the thin filaments.
C) the myosin heads pivot away from the M line.
D) the sarcomere relaxes and expands.
E) actin becomes energized by calcium ions.
Correct Answer:
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Q17: The dark staining area of a sarcomere
Q18: Skeletal muscle fibers arise from embryonic cells
Q19: The attachment of a muscle to a
Q20: Actinin can be found at the
A)Z line.
B)M
Q21: The membrane network that surrounds each myofibril
Q23: Each skeletal muscle fiberis controlled by a
Q24: The organelle(s)unique to muscle that give(s)it contractile
Q25: Troponin assists in controlling the interaction between
Q26: Tropomyosin covering the active sites is an
Q27: Which of the following is the first
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