What substance is formed as a result of the chemical breakdown of glycogen?
Glycogenolysis, breakdown of glycogen, produces
glucose-6-phosphate, which in liver is further converted to
glucose-1-phosphate that can leave the hepatocytes to the blood.
This doesn't happen in muscle cells, so the glucose-6-phosphate is
used in glycolysis instead during muscle contraction to produce ATP
for myosin.