**Educational Content****Question 7:**Why is it more important that epinephrine stimulates the breakdown of glycogen in the muscles rather than elevating blood sugar levels?_Instructions for Educators:_This question can be used to explore the physiological role of epinephrine in the body, specifically focusing on its action during the "fight or flight" response. Students should consider how energy demands are met quickly and efficiently in muscle tissues to support immediate physical activity, and why this might take precedence over systemic blood glucose regulation.**Further Exploration:**- Discuss the role of glycogen as a stored form of glucose in muscles.- Explain how glycogenolysis fulfills the immediate energy requirements of muscle cells.- Consider contrasting epinephrine's action in muscle with its systemic effects, such as increasing heart rate and blood flow.No graphs or diagrams are included in the image.

Epinephrine is a hormone that is secreted by the adrenal medulla. This hormone has insulin-antagonistic effects in its target such as the peripheral tissues The epinephrine stimulation of the breakdown of the glycogen in the muscles is more important that its role in the elevation the sugar levels in the blood because muscles don’t have glucose 6-phosphatase so the glucose is not available for transport as the phosphorylated glucose cannot be transported from the cells to the blood. Thus muscle glycogen acts as a source of glucose i.e. energy locally during exercise.