BIOLOGY- explain this text?

Question

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6WSS-4GSSR96-4&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=c788d5e9a026b6ff1cc19743156f0676)

specifically what does this hav to do with mitochondria and HOMEOSTASIS

Answer 1

Mitochondria are essential for neurotransmission to take place.  So how is the nervous system related to homeostasis?