The circulatory system is responsible for the movement of materials throughout the body. These materials include nutrients, wastes, oxygen, hormones, and immune materials.
The circulatory system, like the water system, continually reuses the same materials.
Circulatory system
The circulatory system.
The Circulatory System.(Cardiovascular System)
The circulatory system.
The circulatory system carries nutrients and oxygen to body cells. In addition, it carries hormones and immune materials.
The circulatory system imports oxygen and exports waste materials or carbon dioxide. The circulatory system distributes fresh oxygen to the tissues and organs of the body.
diffusion
Diffusion.
The main function of the circulatory system is the transportation of needed materials throughout the body. These include nutrients, oxygen, wastes, hormones, and immune materials.
The most obvious answer would be the Circulatory system; however, the Lymph system also transports material throughout the body, it could be compared to the sewer system in a city. If this is for homework though, the right answer would most assuredly be Circulatory system.