—) >

; cB Nerve impulse —_Ca2+ Ca?* Ca?*-calmodulin

Sarcoplasmic , ee reticulum Phosphorylase kinase : Protein kinase A

a ~ Muscle ATP ADP AMP Glycogen Glycogen

j hosphorylase b hosphoryl Pontrecdon Myosin Adenylate dais ie llc as actos

ATPase kinase

Pi