Non perishable food is the answer to this
When blood glucose levels decrease, Your liver which is a glycogen storage converts glycogen to glucose and releases it into circulation. Further energy ( ATP Molecules ) is obtained by the TCA Cycle with subtraces like Fat and Protein.
You have to start with low power, move to medium and then go to high. You have to be careful and use fine focus to make sure you don’t scratch the slide or the lens
Its called the duodenum.
hope this helps you