, Arrived From A Thyroid Gland In A

, arrived from a thyroid gland in a vascular channel, contacts fibers of whey owing to what concentration iodine in blood is often used as an indicator activity of a thyroid gland. Now many researchers consider Tz and 4 as forms uniform a hormone, and ( <) it is necessary to consider as a prohormone, or the transport form, and Tz - the basic form of a hormone. Regulation of synthesis and secretion of hormones of a thyroid gland is carried out by the central nervous system through gipotalamo-gipofizarnuju system. - the tireotropin-rilizing-hormone which, getting to a hypophysis, stimulates development . on a blood channel reaches a thyroid gland and regulates its growth and function. Between the central nervous system, a hypophysis and a thyroid gland there is also a feedback. At surplus hormones hypophysis function goes down, and at their deficiency raises. Increase of production - results not only in strengthening of function of a thyroid gland, but also to or central it . and stimulate processes of oxidation and strengthen the oxygen expense in the fabrics, necessary for normal growth of an organism, play the important role in a salt and water exchange, stimulate fiber synthesis.