This paper deals with the studying of the funcţional state of the pituitary-thyroid system at white rats under the action of the hypokinezy and hyperthermia.Howing carried on the investigationsit was established that: The with a duration of 1,2,3 days leads to the functional activation of the thyroid gland.The hipokinezy on the baskground of the medicine psihotrop eglonil is characterised trough less evident modifications
in the balance of thyroid hormones and thyroid stimulating hormone.