Muscle Contraction Is Stimulated By

Muscle contraction is stimulated by:

A) an increase in [Ca²⁺] in the vicinity of the muscle fibers.
B) a decrease in the [Ca²⁺] in the mitochondria.
C) an increase in [Ca²⁺] in the sarcolemma.
D) a decrease in the [Ca²⁺] in the Golgi.
E) an increase in [Ca²⁺] in the sarcoplasmic reticulum.