Process of Apoptosis and Necrosis

Apoptosis and Necrosis

Apoptosis

·         It is a Greek word which means falling off or dropping off.

·         Programmed death cell which may include deletion of entire structure.

Importance of apoptosis

·         Apoptosis helps to maintain the number of neurons during development.

·         Tail of human developing embryo is removed by this process.

Ways of programmed death cell

·         The first way is that, when the signals are absent cell may commit suicide.

·         The second way is that, by killing signals from other cells, cells are murdered.

Mechanisms of apoptosis

·         First of all, shrinking of the cell occur.

·         Then it condenses and split out.

·         Small membrane bounded apoptotic bodies are released.

·         Then other cells eat these apoptotic bodies by the process of phagocytosis.

                                         

Necrosis

·         It is the accidental cell death because of the tissue damage or injury.

Mechanism of necrosis

·         Swelling and bursting of typical cell occur as a result its intracellular contents are released outside which can damage the neighboring cell due to which inflammation occur.