Physiology All of the following are true about excitation-contraction coupling in skeletal muscle except that A Acetylcholine is released at the nerve terminal B Ca2+ is released from sarcoplasmic reticulum during contraction C Ca2+ is pumped back into sarcoplasmic reticulum during relaxation D Ca2+ binds to tropomyosin to initiate muscle contraction 💡 Explanation All of the following are true about excitation-contraction coupling in skeletal muscle except that ✓ Correct Answer: D. Ca2+ binds to tropomyosin to initiate muscle contraction