Sorry babe i don't get your question if your question is "how does the body use food" then your answer is this (when you eat, your body breaks down all of the starches, sugars, fats, etc. from food that you eat, and uses that from the food you just ate for ENERGY so you can stay alive) so long story short your body uses food for ENERGY....but if that wasn't your question then i'm sorry i don't know
Is there more to this question?
Chest discomfort that feels like pressure , fullness, or a squeezing pain. unexplained shortness of breathing with and without chest comforts.
The correct answer is the left atrium receives the newly oxygenated blood.