Exchange of Materials,

  • Created by: Laura
  • Created on: 15-04-10 17:44

Circulatory system

  • Consists of a group of organs which assist the movement of substances around the body such as glucose and oxygen.
  • Humans and other complex organisms have a closed circulatory system which blood is contained within a series of vessels.
  • This allows; speed, pressure and distribution of blood to be controlled.

Single Circulatory System,

  • In a single circulatory system, the blood flows through a two-chambered heart, just once every time the blood flows in


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