Digestion and Distribution

Paper details:

Summarize the role of the digestive, cardiovascular and endocrine systems in digesting a chicken sandwich, and supplying energy to the cells of the body.

The process of digestion which breaks down the food into molecules which may be assimilated in the body. What are the key molecules for energy (ATP) production?
How these molecules are transported around the body (cardiovascular system).
How these molecules are passed into the cell (endocrine system which includes hormones which facilitate membrane transport).
How is energy made inside the cell (briefly discuss the process).