Which of the following is NOT a part of the excitation- contraction coupling in cardiac muscle?
A)An action potential travels along transverse tubules.
B)Calcium binds to calmodulin in the cytosol.
C)Calcium channels in the sarcoplasmic reticulum open, allowing calcium ions to enter the cytosol.
D)Calcium channels in the plasma membrane open, allowing calcium ions to enter the cell.
E)Calcium opens calcium channels in the sarcoplasmic reticulum.

Question

Quizplus · Accepted Answer

In cardiac muscle, calcium binds to troponin, not calmodulin, which is involved in smooth muscle contraction.

Which of the Following Is NOT a Part of the Excitation-