**History**

both brain functions and functions of all internal organs. It could be called "äutonomic" en‐ docrine system. The central units of both autonomic systems converge on the level of the hypothalamus but interact not only on the central but also at the peripheral levels, making

**Anna Naidenova Tolekova**

Stara Zagora, Bulgaria

Trakia University, Medical Faculty,

extremely precise regulation of body homeostasis.

VIII Preface
