Physiologic Atrophy o A good example is that of endometrium and breast which occurs with menopause and the loss of estrogen stimulation. o Uterine involution Thymic atrophy after puberty In the aging process,atrophy may be a normal morphologic changes,e.g.the brain and heart.Physiologic Atrophy  A good example is that of endometrium and breast which occurs with menopause and the loss of estrogen stimulation.  Uterine involution  Thymic atrophy after puberty  In the aging process, atrophy may be a normal morphologic changes, e.g. the brain and heart