Neurohumoral regulation

Neurohumoral regulation is a form of regulation of processes in the organism, in which nerve impulses and carried by the blood and lymph substances act as a link of a single regulatory process. Homeostasis, i.e. maintaining a constant internal environment and balance of the organism with the environment, is provided mainly at the expense of neurohumoral regulation. An important role belongs neurohumoral regulation and in the processes of self-regulation of physiological functions, which are automatic maintenance on a strictly constant level constants and processes in the body. Neurohumoral regulation, combining neural and humoral mechanisms, is a more perfect form of regulation, rather than each of them separately. So, nervous link provides fast communication between the various parts of the body, and humoral - long governing of influence.
Neurohumoral regulation is carried out in two ways. The first method is to directly action humoral substances (products of tissue exchange or hormones) on the Central nervous system. This changes the excitability of nerve cells. So, for example, carbon dioxide blood acts on cells of the respiratory center, and the chemistry of the blood, particularly sugar, is irritant to nerve cells of food center. The second way is that different substances being carried through the body by the blood and lymph, affect specialized receptorsthat are located in the internal organs. These receptors react to changes in the chemical composition and osmotic pressure of liquids. An example of these receptors may serve chemoreceptors in the walls of blood vessels, reacting to changes in the carbon dioxide content in the blood and in conjunction with the cells of the respiratory centre involved in the maintenance of its permanence. A role in neurohumoral regulation play various mediators (see) nervous system.