The glucose contained in the food that enters the body enters the blood and heart through the blood vessels while the oxygen from air enters the body cells through the respiratory system.
Although there is a missing image a general answer is provided within the concept of your question
A healthy simulation body represents a real healthy human body, therefore when food is consumed the food is broken down in the digestive system. and
The glucose from the food will be absorbed into the blood stream of the individual, while the oxygen breathed in by the body will be absorbed into the body cells of the human.
Also some glucose from the consumed food will also be absorbed into the body cells to provide the necessary energy required by the body.
Hence we can conclude that The glucose contained in the food that enters the body enters the blood and heart through the blood vessels while the oxygen from air enters the body cells through the respiratory system.
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