What nutrients do not need to be digested?
The nutrients that do not need to be digested they have to be smaller than the cells of the small intestine. Some of these are sugars and amino acids.
Which system will the digestive system work with to ensure that your body gets the nutrients from the food you eat?
Food is digested in the stomach, and this digestion continues to some degree in the small intestine. But it is largely in the small intestine that the nutrients are absorbed from the stream of digested materials. Anything not absorbed continues on to the large intestine for water extraction and further on to excrement.
How does digested food get into our blood? once almost fully digested the food moves through the inestines, while the waste moves on to be excreted, the nutrients and such which are a great use to the blood cells are absorbed through the walls of the intestines. Thus into our bloodstream. And that first you need to chew and it will go to your blood stream