is atrophy a process
Atrophy is the general physiological process of reabsorption and breakdown of tissues, involving apoptosis.When it occurs as a result of disease or loss of trophic support due to other disease, it is termed pathological atrophy, although it can be a part of normal body development and homeostasis as well.stronauts in microgravity must exercise regularly to minimize atrophy of their limb muscles. There are many diseases and conditions which cause atrophy of muscle mass. For example diseases such as cancer and AIDS induce a body wasting syndrome called  cachexia , which is notable for the severe muscle atrophy seen.