The sarcoplasmic reticulum stores ____ when a muscle is relaxed and releases it for binding to ____ during contraction.
A) calcium; troponin
B) calcium; tropomyosin
C) sodium; tropomyosin
D) potassium; tropomyosin
E) sodium; troponin
Correct Answer:
Verified
Q32: The H zone
A)is the area within the
Q33: Foot proteins
A)span the gap between a lateral
Q34: During excitation-contraction coupling,
A)the action potential travels down
Q35: During muscle contraction,
A)the Z lines move farther
Q36: The T tubules
A)store Ca₂₊
B)provide a means of
Q38: Of the steps in excitation-contraction below, which
Q39: Which statement is incorrect about cross bridges?
A)They
Q40: Sequence the following events involved in muscle
Q41: Twitch summation
A)is a means by which gradation
Q42: In twitch summation, the muscle fiber
A)is stimulated
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