An Example of Electromechanical Coupling in Smooth M Uscle Is

Question

An example of electromechanical coupling in smooth m uscle is activation of contraction by
A) Release of Ca2+ via G
B) Increased cytosolic [Ca2+] through voltage-gated Ca2+ cha nn els
C) Activation of protein phosphatase via G -protein coupled receptors
D) Ca2+ release through RyR
E) Ca2+ uptake into the SR m ediated by phospholamban phosphorylation

Accepted Answer

Increased cytosolic [Ca^2+] through voltage-gated Ca^2+ channels is an example of electromechanical coupling in smooth muscle, where electrical signals lead to mechanical actions such as muscle contraction.