<prompt> Muscle cannot make use of glycogen for energy because of deficiency ofGlucokinasePhosphoglucomutaseG-6-phosphataseMuscle phosphorylae  <response>: Muscle doesn;t contain glucose -6-phosphate. only liver contain. Glucose -6-phosphatase hydrolyze glycose-6-phosphate into glucose and released into the blood.Ref: DM Vasudevan, 7th edition 