Describe the common physiologic changes associated with aging that affects the nervous system. Briefly focus on the memory, brain or some organs being affected by the increasing age. Do the older peop

Describe the common physiologic changes associated with aging that affects the nervous system. 

Briefly focus on the memory, brain or some organs being affected by the increasing age. Do the older people face a risk of depression as well? Comment briefly. 

As the age increases, do the nerve cells in brain increase or decrease?

Can brain compensate for the losses that nerev cells suffer due to aging?