The Gljukostatichesky theory - the sensation of hunger is connected with decrease in level of glucose in blood. Except digestive the liver carries out variety of other meal and drug intake influence on всасывание medicines. Concentration of cheap Cialis Black Perception - process of reception and transformation of the information, providing to an organism orientation in world around. It is active process of allocation of weight of diverse objects of an external world of what more all is necessary at present. Sensations and perceptions of the person have conscious, intelligent character. The important role in it is played by thinking and speech. The thinking allows to receive knowledge of such objects, properties and relations of the real world which cannot be directly sensually apprehended. Thinking - process of the mediated, generalised reflexion of the validity with its communications, relations and laws. By means of thinking the maintenance and sense perceived, and also internal features of subjects and the phenomena is learnt. By means of thinking the person can understand the present, the future and the past, to build hypotheses and to provide their check. The highest form of generalisation - concept. In concept that cannot be directly apprehended by means of sense organs is reflected, it reflects in a subject only essential.