Which of the following is NOT part of the explanation for the all- or- nothing property of an isometric twitch contraction of skeletal muscle?
A) equivalent calcium reuptake by the sarcoplasmic reticulum
B) equal numbers of crossbridges activated by the calcium released
C) equivalent calcium released by each action potential
D) all- or- nothing property of the action potential generated by a skeletal muscle
E) equivalent activation of calmodulin stimulating myosin light- chain kinase activity
Correct Answer:
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