In Favorable Conditions Process Of Consecutive Divisions Can

In favorable conditions process of consecutive divisions can proceed beyond all bounds. A classical example: unicell division - - during 8400 generations. In this case has no value that actually only copies of some of the elementary create the generations, capable to share (without sexual reproduction) vaguely long. If this ability was observed only at one kind of the elementary or even at one branch and then it would be the basis for the statement that theoretically there is a life without internal causes of death in the presence of certain favorable environmental conditions. Property of potential immortality can be seen and on an example of difficult metaphytes if in their cages there are so-called malignant changes. Really, normal cages of which the metaphyte is under construction, are in such interaction with each other that the sizes of bodies remain constants. So, for example, in a gastroenteric path there is very intensive updating of cages. But new cages regularly come in the stead perishing, that is cages appears exactly so much, how many it is necessary for maintenance of their "planned" quantity.

The Nature - A Sphinx. And That It Is

The nature - a sphinx. And that it is more true c ruins the person That, may be, no Riddle from a century is present and was not at it. F.Tyutchev The preface. Now still it is impossible to assert that to a science the true reasons of ageing of the person are known. Meanwhile for the answer to this question search from time immemorial: after all in effect everyone thinks sooner or later of this problem. Throughout many tens years gerontologists - the experts who are taking up the issue of ageing, put forward a number of concepts and theories for an explanation of mechanisms of ageing. But these theories remain accessible to only certain circle of experts whereas results of similar scientific workings out are of interest for everyone. This circumstance first of all also has formed the basis for a writing of the given book. The scientific materials put in its basis, were developed by the author more than thirty years. However their main result can be formulated rather short: at higher organisms, including the person, ageing is directly connected with the development mechanism, namely the same factors which provide organism development, continue to operate and after its end, being simultaneously and the reason leading to ageing.

These Hormones Regulate Hypophysis Activity - Gland-regulator Of

These hormones regulate hypophysis activity - gland-regulator of many departments systems. Besides, directs the hormones and to the remote areas of a body where these hormones carry out a role. Thus, if the central nervous system has received a signal from sense organs this signal is transferred in which, in turn, sends a signal to a hypophysis, and last - in working bodies. In certain cases it is direct through the nervous device or through hormones influences body fabrics. So, thanking the interrelation between an external world and organism private world is carried out. - a concrete place of a joint of two worlds. For this special communication between external and internal the nature has created also the special form: - a hybrid nervous and systems. Thanks to the unusual device transforms the high-speed signals arriving from nervous system, in , but specialised reactions systems. At first sight necessity of existence and a hypophysis, and can seem not clear. It would Seem that hormones could in all cases without an intermediate link - a hypophysis - directly to influence an organism.