Animal Circulatory

• Circulatory System - a network of vessels that carry the fluids to and from the parts of the body distant from the sites of digestion (gut) and gas exchange (gills or lungs).
• open circulatory system - the blood is not enclosed in the blood vessels, but is pumped into a cavity called a hemocoel. The blood is called hemolymph because it mixes with the interstitial fluid.
• Closed Circulatory System - The blood flows entirely within blood vessels, so it physically separated from other body fluids. In this

  type of system, blood is

  pumped by a heart through

  vessels.