Necrosis is the process of cell death that occurs when cells are damaged or deprived of essential nutrients and oxygen. This can happen due to various factors, including injury, infection, or lack of blood flow. When cells undergo necrosis, they swell and eventually burst, releasing their contents into the surrounding tissue, which can lead to inflammation and further damage. There are different types of necrosis, such as coagulative necrosis, which often occurs in cases of heart attacks, and liquefactive necrosis, commonly seen in brain injuries. Understanding necrosis is important in medical fields, as it can help diagnose conditions and guide treatment options.