The job of the circulatory system is to transport fluid around the body. The blood transports
  • nutrients,
  • dissolved gases (oxygen and carbon dioxide),
  • waste products (urea),
  • hormones,
  • cells (red blood cells and white blood cells)
  • platelets and
  • heat around the body.
circulatory_system.jpg

Heart
Animation - http://www.sumanasinc.com/webcontent/animations/content/human_heart.html
Map of the human heart - http://www.pbs.org/wgbh/nova/heart/heartmap.html
Amazing heart facts - http://www.pbs.org/wgbh/nova/heart/heartfacts.html
BioInteractive Heart diagrams - http://www.hhmi.org/biointeractive/cardiovascular/animations.html

Arteries
Veins
Capillaries
Blood - White Blood cells; Red Blood cells; Platelets; Plasma
Liver