Glycogen metabolism epinephrine

Epinephrine and glucagon have which one of the following effects on glycogen metabolism in the liver ... 

Hormonal control Glycogen metabolism is tightly controlled by hormones. When blood glucose by epinephrine levels fall, glucagon is secreted by the a cells of the pancreas and acts on the and glucagon liver to stimulate glycogen breakdown to glucose which is then released into... 

Compare the effects of glucagon and epinephrine on glycogen metabolism in liver and in muscle. 

What would increased epinephrine do to protein phosphatase 1 (PPl) in muscle, and how would muscle glycogen metabolism be affected ... 

Cyclic nucleotide phosphatases are inhibited by caffeine. What effect would drinking a strong cup of coffee have on glycogen metabolism when epinephrine levels are dropping in the blood ... 

Storage and utilization of tissue glycogen, maintenance of blood glucose concentration, and other aspects of carbohydrate metabolism are meticulously regulated by hormones, including insulin, glucagon, epinephrine, and the glucocorticoids. 

Epinephrine is a hormone synthesized in the adrenal glands from tyrosine (see p. 352). Its release is subject to neuronal control. This emergency hormone mainly acts on the blood vessels, heart, and metabolism. It constricts the blood vessels and thereby increases blood pressure (via ai and a2 receptors) it increases cardiac function (via P2 receptors) it promotes the degradation of glycogen into glucose in the liver and muscles (via P2 receptors) and it dilates the bronchia (also via P2 receptors). 

---