An action potential rapidly spreads to the central portions of a muscle cell by means of the
A) Z lines
B) sarcoplasmic reticulum
C) H zone
D) pores in the membrane surface
E) T tubules
Correct Answer:
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Q32: During a cross-bridge cycle in skeletal muscle,
Q33: During contraction of skeletal muscle fibers, the
A)
Q34: Sequence the following events involved in muscle
Q35: Binding of _ to myosin permits the
Q36: Foot proteins
A) span the gap between a
Q38: Which statement is incorrect about cross bridges?
A)
Q39: During excitation-contraction coupling,
A) The action potential travels
Q40: According to the sliding-filament mechanism, the
A) A
Q42: To pick up something heavier than your
Q59: During an isometric contraction, the muscle
A)maintains a
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