Which of the following is the electrical impulse that initiates a chain reaction resulting in contraction?

A) Repolarization
B) Deflection
C) Depolarization
D) Artifact
E) Polarization

Depolarization

The loss of polarity, or opposite charges inside and outside; the electrical impulse that initiates a chain reaction resulting in contraction.

Electrical Impulse

A rapid, transient electrical charge that travels along the membrane of a nerve or muscle cell.

Chain Reaction

A sequence of reactions where a reactive product or by-product causes additional reactions to take place.