Which is true of muscle contraction?...

Which is true of muscle contraction?

A

(a) Sarcolemma becomes permeable to `Ca^(2+)` ion

B

(b) Sarcolemma becomes permeable to `Na^(+)` ions

C

(c) Sarcolemma becomes nonpermeable to `Na^(+)` ions

D

(d) Concentration of `Ca^(2+)` ions is reduced in myoplasm

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The correct Answer is:

B

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