A) generation of end- plate potential
B) release of calcium from troponin
C) formation of cross-linkages between actin and myosin
D) hydrolysis of ATP to ADP
Correct Answer: B
Solution :
The generation of excitation contraction coupling involves following events: (i) Action potential as impulse passes from motor end plate over sarcolemma. (ii) Stimulation of sarcolemma to release \[C{{a}^{2+}}\] ions into sarcoplasm. (iii) Binding of \[C{{a}^{2+}}\]to troponin causing change in shape and position of tropomyosin. (iv) Formation of cross-bridges between actin and myosin.
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