• Atrophy
  • Senile atrophy
    • Physiological aging of cells that affects all organs
    • Includes the formation of lipofuscin deposits
      • Composed of lipid polymers and phospholipid-protein complexes
      • Yellow-brown, granular pigments found in organs such as the heart, lung, colon, kidney, liver, and eye
      • Caused by normal wear-and-tear
      • Formed by the peroxidation of polyunsaturated lipids of subcellular membranes