Saturday, February 16, 2008
Appetite And Growth, Dream And Wakefulness, Emotional Lifting
Appetite and growth, dream and wakefulness, emotional lifting and mental depression, at last, reproduction - all it in many respects depends on activity . In essence, there is no function in difficult integration of an organism which would not demand participation . But as a whole all its functions can be divided on two groups. First, adapts organism activity for environmental conditions. Differently, if to exclude mechanical protection which is provided at specialised organisms with a skin, muscular and bone fabrics co-ordinating activity protects an organism from damaging influences of an environment, that is counteracts influence of the factors, able to lead death from the external reasons. Secondly, is the supreme body of a constancy of the internal environment. Together with adjustable bodies the closed system works as , providing a constancy of the internal environment according to the information received from private world of an organism. In this activity carefully supervises constant, regular processes which should proceed cyclically, irrespective of an external world.
Thursday, February 14, 2008
On The Contrary, Provision Of Energy - The
On the contrary, provision of energy - the main thing. To fabrics should be quickly delivered an additional food, and sends impulses to impellent nerves of heart and vessels. The gleam of vessels of an internal is even more narrowed, the action of the heart amplifies, pressure of blood in system raises and as a result the blood current is accelerated. (That is why long negative emotions are especially dangerous to the hypertensive person, they far are not indifferent and for healthy people as promote occurrence hypertensive *. Simultaneously adrenaline, a growth hormone, fat acids, cholesterol, and . . - all those factors which were consistently involved in maintenance reactions, raise coagulability of blood and by that help to avoid the heavy bleedings arising at wound. (But the same protective mechanism can be at the bottom of occurrence of a thrombosis of vessels and a heart attack of heart at the person under the influence of emotional excitation.) In the course of struggle everything that disturbs to it, should be braked.
Monday, February 11, 2008
Means, Cholesterol Should Arrive From A Parent Organism.
Means, cholesterol should arrive from a parent organism. But also this source of cholesteric raw materials is rather limited. After all performance of the law of a constancy of the internal environment in that also consists that the organism is protected as from a lack, and surplus something. That is why for maintenance with cholesterol of requirements of development of a fruit the constancy law should be broken. Essential feature of this infringement is that the mechanism changing a homeostasis, settles down in temporarily existing body - a placenta. Therefore the changes of a homeostasis peculiar to the period of pregnancy, are time - the placenta together with sorts finishes the existence. In pregnancy the placenta develops a number of hormones, and in particular a placentary hormone of growth which reduces glucose combustion in a parent organism. But if the glucose arriving with food, completely is not used as fuel it turns to fat - adiposity develops. In an organism there are two energy sources - glucose and fat acids.
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