​your course text. In your initial pos

your course text. In your initial post:

Briefly describe the normal function of these three systems and associated organs.
Choose and briefly describe one chronic disease or disorder for each of the three systems and explain how the diseases/disorders alter the normal function.
Examine potential causes for the disease or disorder and list signs and symptoms that indicate the disease has developed.
Analyze actions people can take to reduce their risk of developing the chronic disease or disorder. Briefly explain how these actions would impact the environment.