Autonomic Nervous System
Brain and Nerves

Autonomic Nervous System (ANS) regulates individual visceral organ function and homeostasis, and for the most part is not subject to voluntary control.

The ANS is divided into two separate divisions on the basis of anatomical and functional differences:

• the Parasympathetic System
• the Sympathetic Systems,

Additional Picture of Sympathetic and Parasympathetic Nervous System

Vagal stimulation rapidly increases leptin and histamine secretion in human stomach

Differential regulation of TNF receptors by vagal nerve stimulation protects heart against acute ischemic injury. Katare RG, Ando M, Kakinuma Y, Arikawa M, Yamasaki F, Sato T. 2010