Blood vessels

The life and blood vessels - at first glance, these two concepts are not necessarily related. However, after reading the monograph is obvious that the close relationship between them is a necessary condition of a certain level of improvement of multicellular organisms.
There is no doubt that a critical phase in the evolution of the organic world of the appearance of the cells was the emergence of multicellular animals. This created an enormous, almost unlimited possibilities for complications, and improving living beings on the basis of a more subtle and deep specialization and differentiation of cells. It is well known that any improvement is inevitably related with increasing specialization, detailing elements organizing system. And this process, in turn, requires more and better cooperation and coordination emerging diversity of items or cellular systems. And as if these opposite processes - cell specialization and cellular integration is closely related to the evolutionary process of improvement of living organisms, are provided primarily by blood vessels.
Indeed, blood vessels and blood, performing important homeostatic function, provide the ability of cells to deep specialization. Indeed, much of the cells developed a multicellular organism lives in a very privileged, "hothouse" conditions. This, in turn, creates opportunities such cells not to spend a lot of time and effort on your life support, or, as they say now, on the work of their "kitchen genes", and to specialize and develop more refined mechanisms necessary to perform more complex organism functions by activating specific, peculiar only to this type of cell genes, so called "genes luxury".
On the other hand, to perform the highly differentiated cells of the complex processes at the organism level between them needs to work closely coordinated interaction. Here it is extremely important role of the blood vessels. After all, one of the main ways of interaction between cells - currency chemical signals. If the cell is something wants to inform its partners, it throws in the intercellular environment of specific chemical factor ligand (it may be a hormone, mediator, neuropeptide, and so on). The cell is a partner or target cells have specialized protein structures receptor selective sensitive to this chemical factor. As a result of interaction of ligand-receptor cell-target receives the message. Naturally, one of the main "overpasses" for such messages are blood vessels.
Intercellular interaction, integration of multicellular organisms had already highly developed animals is determined not only by blood vessels, and nerve system. Indeed, the ligand-receptor interaction between specialized genes different way of differentiated cells can be carried out not only on the basis of the humoral system. To ensure this interaction can and nervous system. And in this case there are at least two important benefits - can dramatically increase the speed of the signal from one cell to another and the impact of spatial may be more focused, more local. In other words, nerve pathways through nerve impulses can be directly involved in complex multidimensional network of genetically-receptor relationships of a multicellular organism.
The interaction of two systems (circulatory and nervous) under certain conditions discussed in this book, determines the level of integration of a multicellular organism of the animal, which makes possible its mobility, ensures its ability not only to develop suitable for habitats, but also, moving from place to place, farther away from the source environment - the World ocean, from other sources of water, to settle all areas of the globe: from the atmosphere to the deep ocean, from unsuitable for living peaks of the mountains to the ocean trenches, from deserts to jungles.
The possibility triumph of settling the land, the ability of animals to adapt in different natural conditions of the study authors.
As disciples of two outstanding Russian physiologist Vladimir Nikolaevich Chernihiv and Mikhail Georgievich Dalnova, the authors of the book are organically combined the ideas of the doctrine of the circulation, on the one hand, and understanding of reflex regulation of internal organs. C. N. Chernihiv was a connoisseur of afferent systems, Meters, Udalov - vegetative nervous system. Together, they were two of the most important parts of a reflex arc.
D. L. Dlygach and B. S. Kulaev was able to submit the material in chronological order. This applies to the history of physiology, and to the history of organisms. While they found their original approaches to the problem of interaction of two media of the organism - both internal and external maintenance of a constancy of the internal environment in peace and in widening the range of changes in the external environment and its own activity of the organism. Finally, the authors come to the formulation of physiological concepts of space and time, about mechanisms of their perception and change. Very interesting and involves a change in attitude on the regulation of the whole system of inter-relations of the whole organism.