The Basic Components Of This System Are A

The basic components of this system are a bark of adrenal glands which develops a protection hormone - , a hypophysis which develops , regulating production , and, at last, , supervising secretion (fig. 3). All this three is in one team, obeying feedback mechanism drives. For example, if in blood concentration it on the mechanism of a negative feedback brakes activity raises, means, production of the regulator-kortikotropina. As a result production adrenal glands decreases. Presence of such interrelation is easy for checking up as follows. To an animal the certain quantity or its derivative - dexamethasone is appointed. Dexamethasone, braking on the mechanism of a negative feedback allocation , thereby reduces also activity of a bark of the adrenal glands supervised , that is reduces production . If always to use the same dose of a braking hormone - dexamethasone degree of decrease in production will depend on a sensitivity threshold to dexamethasone action. For example, at two-month rats under the influence of dexamethasone level in blood has decreased on 51 %, and at rats at the age of eight months - only on 11 %.

At Last, We Will Enter Into The Description

At last, we will enter into the description of this picture the important element - increase a threshold of sensitivity which neither G.Sele, nor other researchers reactions have not seen. And meanwhile without increase a threshold reaction could not be carried out a little long . However, in this case and the payment of an organism for adaptation would not be so high. So, the dog and a cat have noticed each other. Sense organs already on distance give a signal in the central nervous system that the opponent close. Probably, struggle and consequently to it preparation is necessary is necessary. The situation is estimated by a cerebral cortex, but colouring of an estimation is emotional. Emotion is one of the strongest factors. Regulation of emotions is appreciably concentrated in . When the cat accepts the characteristic pose with the curved back, it means that the information received from a cerebral cortex, has excited emotions of fear and aggression in . It is a phase of preparation for struggle.