Place the following events in the correct sequence in which they occur: excitation-contraction coupling, electrical excitation of the muscle cell membrane, sliding of the myofilaments.
A) sliding of the myofilaments, electrical excitation of the muscle cell membrane, excitation-contraction coupling
B) electrical excitation of the muscle cell membrane, excitation-contraction coupling, sliding of the myofilaments
C) electrical excitation of the muscle cell membrane, sliding of the myofilaments, excitation-contraction coupling
D) excitation-contraction coupling, sliding of myofilaments, electrical excitation of the muscle cell membrane
Correct Answer:
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Q1: When a muscle cell is at rest,
Q2: During the _ period in a muscle
Q4: The rising phase of a muscle twitch
Q5: Graded muscle contractions .
A) depend on increasing
Q6: During an action potential in muscle, .
A)
Q7: A muscle twitch is _.
A) a twinge
Q8: When muscle is stimulated directly to contract,
Q9: What causes muscle contractions to be graded?
A)
Q10: The gradual activation of more and more
Q11: The stimulus from motor neuron to neuromuscular
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