An organ system that provides the transport of nutrients throughout the body.

The transport of nutrients throughout the body is carried out by the circulatory system. After absorption in the intestine, all substances enter the bloodstream. With the blood stream, they are brought to the liver, which processes them and neutralizes them, if necessary. Ready-made nutrients are obtained that can be absorbed by the body. After the liver, they again enter the bloodstream and are transferred to the organ that uses them for their needs. After that, the blood removes unnecessary substances from the body, bringing them to the kidneys.