blood is a part of the circulatory system & digestion is when food is absorbed into the blood stream ->  food is absorbed into the circulatory system through the blood  food is absorbed into the circulatory system through the blood & the circulatory system transports blood throughout the body ->  the circulatory system carries  food from the digestive systems to the rest of the body  the circulatory system carries  food from the digestive systems to the rest of the body & food contains nutrients for living things ->  the circulatory system carries nutrients from the digestive systems to the rest of the body  the circulatory system carries nutrients from the digestive systems to the rest of the body & cells are a part of the body -> the circulatory system carries nutrients from the digestive system to the body's cells