Osteocyte - Osteocyte apoptosis and associated pathologies. 1  Osteocytes die as a consequence of senescence, degeneration/necrosis, apoptosis (programmed cell death), and/or osteoclastic engulfment. [1]
Myelin is a substance which encloses the axons of neurons, providing electrical insulation that helps the nervous system function. The importance of this substance is most evident in the types of diseases that develop when it is damaged or destroyed.
Nerves are protected in the body by a coating called myelin. When myelin is worn away or damaged, nerves donât work as well. They can deteriorate, causing problems inside the brain and throughout the body. Damage to the myelin sheath around nerves is called demyelination.erves are protected in the body by a coating called myelin. When myelin is worn away or damaged, nerves donât work as well. They can deteriorate, causing problems inside the brain and throughout the body. Damage to the myelin sheath around nerves is called demyelination.