Thereby, Being Protected From External Causes Of Death,

Thereby, being protected from external causes of death, the organism not only does it by illnesses of adaptation, but also accelerates natural process of ageing. Here thus a hardship and grieves reduces days of a life. It is necessary to add still that increase a threshold at stress is caused as follows. When the cat and a dog have noticed each other, the signals estimating this event, from the central nervous system directing in system and in , stir up its activity. But any activity in system of nervous cages is connected with an expenditure of intermediaries - a nervous impulse. All vegetative system is subdivided on mutually counterbalanced two, antagonistic department - sympathetic and parasympathetic nervous system. According to it there are two groups of mediatorov-intermediaries. It is conditionally possible to name them With - for sympathetic impulses and P-mediatory - for parasympathetic. Group S-mediatorov concern and norad-renalin - the substances structurally very close to to a hormone of alarm - to adrenaline; group P-media-torov includes and connections close to it ( ).