Q.

With regard to contraction and relaxation of skeletal muscle, all of the following are true EXCEPT:

A. contraction involves the release of K+ from the terminal cisterns
B. relaxation involves the release of Ca2+ from troponin
C. prior to contraction, increase Na+ and K+ conduction occurs in the end-plate membrane
D. relaxation involves cessation of the interaction between actin and myosin
E. contraction involves inward spread of depolarisation along T tubules
Answer» A. contraction involves the release of K+ from the terminal cisterns
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