The nervous system connects the body with the external environment, ensures the constancy of the internal environment and thereby survival. It integrates organs, systems into a single whole and coordinates their work. With the help of the senses, a person recognizes objects of the outside world and evaluates their biological and social significance.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.