Functions of Heart

         Structure            Functions
            heart  Prevent bllood to lungs and all body organs.
               venae cavae Return de-oxygenated blood from to right auriciide .
                Right auricle receives_blood to and ugns and plumps it into right penvice.
                Left auricle receives oxygenated blood and pumps it to left veutricle 
                Right ventricble receives de_oxygenated blood and pump it ti their jvennyricle
  cardiac muscle 
contacts without a fatigue
  Tricuspid valve
Prevent back flow of blood into auricles
                              Bicuspid Valve Prevent back flow of blood into auricles
                              Valve Tendons support valves