by the digestive system
Nutrients are carried by the blood.
to put simple food is broken down
The nutrients are taken out of the food while it is being digested, and going into your bloodstream, which flows around your body and feeds the nutrients to different parts of your body.
To make cells and build body parts
To put it simple... food is broken down into its nutritional value (nutrients) and passed through the bloodstream to the various parts of the human organism.
they use it to build body parts and make cells
through the circulation of the blood.
assimilation is the absorption of nutrients from the food we eat by our body
The system in the body that absorbs nutrients is the digestive system. Within the digestive system is the small intestine. When food passes through the small intestine, villi, absorb all of the nutrients the body needs from the food. Villi are small fingerlike projections in the small intestine that increase surface area and "reach" out to the food and absorb its nutrients. So, to answer your question, villi that are in the small intestine within the digestive system absorb what nutrients our body needs.
they use it to build body parts and make cells
organisms use nutrients from food to build bodily parts and make cells
The path that food takes to get out of the small intestine and into the blood is through the body cells. When food is broken down in the stomach, nutrients are absorbed through the intestinal walls. The nutrients cross the mucosa into the bloodstream where they are transported to other parts of the body.