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Which Statement About Excitation-Contraction Coupling Is Incorrect

Question 88

Multiple Choice

Which statement about excitation-contraction coupling is incorrect?


A) Calcium ion is released from the transverse tubule.
B) Calcium ion is released from the sarcoplasmic reticulum.
C) Tropomyosin moves to expose myosin binding sites on actin.
D) Troponin binds calcium ion and signals tropomyosin to move.
E) Relaxation requires uptake of calcium ion by the sarcoplasmic reticulum.

Correct Answer:

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