• "the red blood cell graveyard" is a name given to the small circulatory channels in the spleen. There, old cells can get trapped and subsequently destroyed by macrophages.
• Hemoglobin is broken down elsewhere.
• First, it is broken down into heme and globin
• The fate of Heme :
• The iron core is saved for reuse
• The rest is degraded to a yellow pigment called bilirubin. Bilirubin is picked up by the liver, where it is used as a bile pigment. There is also sometimes a green pigment called biliverdin made.
• The fate of bilirubin? The intestine metabolizes it to urobilinogen, which is further changed to the brown pigment stercobilin.
• The fate of Globin :
• It is metabolized or broken down to its component amino acids

Fibrinolysis (destruction of blood clots) 

• Removes unneeded blood clots, naturally!
• Plasmin is produced from the activation of plasminogen. Plasmin is an important fibrin-digesting enzyme.
• Because plasminogen is incorporated into a clot, when it is activated by factors in the endothelial tissue of the vessel, it destroys the clot from the inside out.
• Fibrinolysis occurs about 2 days after clot formation.