What has a system of fluid filled tubes?

A system of fluid-filled tubes can refer to a variety of biological and mechanical systems. In Biology, the circulatory system in animals consists of blood vessels that transport blood throughout the body, while in plants, xylem and phloem tubes transport water and nutrients. Mechanically, hydraulic systems utilize fluid-filled tubes to transmit power and control machinery. These systems rely on fluid dynamics to function effectively, whether in living organisms or engineered devices.