The human body structure and function of all living animals with great experience
and a high degree of perfection . It is known that the development of the human body and its
competitive conditions need to create a relationship with one of the important role .
Therefore , people in the process of development of a number of evalyusion product of
biological and social changes . Members of the human body tissue and is closely linked to
one another . In addition , they have a connection with the surrounding environment , too .
Both contacts are managed by the nervous and endocrine systems .
