The cardiovascular system

  • Many cells in a multicellular organism arenot in direct contact with their surroundings. 
  • The organism cannot rely on diffusion alone to supply the cells of all its organs with nutrients and oxygen it needs to survive. 
  • Cardiovascular system, allows blood to circulate around the body to transport and supply the essential nutrients that multicellular organisms need in order to maintain homeostasis. 
  • Blood is responsible for transporting:


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