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1 December, 00:39

The factor (s) that determine the duration of a twitch in various types of fibers is the speed of the

A. removal of Ca2 + ions from the sarcoplasm only.

B. hydrolysis of ATP only.

C. movement of Na + across their membranes only.

D. removal of Ca2 + ions from the sarcoplasm and hydrolysis of ATP.

E. removal of Ca2 + ions from the sarcoplasm and hydrolysis of ATP and movement of Na + across their membranes.

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  1. 1 December, 04:09
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    Hai : 3

    Interesting question about physiology.

    The duration of a twitch in various types of fibers is the speed of the removal of Calcium ions from the sarcoplasm. Therefore, your answer should be A.
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