Scientists have shown that the human heart can regulate the processes that occur in stressful situations with the organism.
This is due to the presence of specific receptors in heart cells, helping to reduce the negative influence of adrenaline on the body to prepare it for the effects of stress.
The mechanism of inclusion of protective functions occurs in a variety of adverse conditions, provoking the emergence of stress, such as pain, fear, experience, and includes effective protective action, directing the appropriate signal to all the organs and tissues.
Different parts of the nervous system are responsible for different functions. At the same time the sympathetic nervous system, which is a special division of the autonomic nervous system, with the help of sympathetic neurons send signals adrenaline, inducing certain organs to work intensively. This mobilization of internal resources of the body is a standard protective function, protecting it from the adverse effects of stress.Source: www.goodshelp.com