the digestive system digests food for the body & digestion is when food is absorbed into the blood stream ->  the digestive system absorbs food into the blood stream  the digestive system absorbs food into the blood stream & blood is a part of the circulatory system ->  the digestive system absorbs food into the circulatory system through the blood stream  the digestive system absorbs food into the circulatory system through the blood stream & the circulatory system transports blood throughout the body ->  the circulatory system absorbs / carries food from the digestive systems to the rest of the body  the circulatory system absorbs / carries food from the digestive systems to the rest of the body & the digestive system breaks down food into nutrients for the body -> the digestive system breaks down food into nutrients which are absorbed into and carried through the body by the circulatory system