In twitch summation:
A) The muscle fiber is stimulated again before the action potential has returned to resting potential.
B) The muscle fiber is stimulated again before the filaments have completely returned to their resting position.
C) Stronger muscle contractions occur but stronger action potentials do not occur.
D) The muscle fiber is stimulated again before the action potential has returned to resting potential, and stronger muscle contractions occur but stronger action potentials do not occur.
E) The muscle fiber is stimulated again before the filaments have completely returned to their resting position, and stronger muscle contractions occur but stronger action potentials do not occur.
Correct Answer:
Verified
Q47: A motor unit refers to
A)a single motor
Q48: In a muscle fiber undergoing maximal tetanic
Q48: Twitch summation
A) is a means by which
Q49: Which of the following is involved in
Q51: Picking up a book at a constant
Q55: Whole muscle tension depends on all of
Q56: During an isotonic contraction:
A) Filaments do not
Q57: Which of the following is not involved
Q58: Submaximal isometric contractions are important for
A) moving
Q60: The origin of a muscle is its
A)main,
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