In Space, Or A Crack ( A Crack),

In space, or a crack ( a crack), between nervous cages from a shoot are allocated substances-intermediaries which, like hormones, operate on receptors of a membrane of the next nervous cage, stimulating or, on the contrary, braking its activity. And everyone a cage, besides, has on the membrane receptors-aerials for an attachment of working hormones glands. These hormones operate on on a feedback mechanism, stimulating or braking activity cages. Each of three basic systems has in the representations - kernels, or the centres, and even a number of the interconnected centres. In cages of these centres are made special hormones which supervise production of each hormone of a forward share of a hypophysis. In turn, on the nervous cages forming these centres, have an effect, as hormones, and hormones peripheral glands, that is working hormones. The structure provides ample opportunities for change of a threshold of sensitivity of this regulator. Really, most simple way of change of a threshold of sensitivity to action of working hormones is change of number of aerials-receptors on a membrane of cages corresponding the centre, for example "the sexual centre" reproductive system.