How is an organism different from its constituent parts? What are the similarities and differences between

How is an organism different from its constituent parts? What are the similarities and differences between the organ system, apparatus and functional system?

An organ is part of the whole organism and therefore cannot work outside the body. At the same time, the body is able to do without some organs.
The systems of organs of the category are permanent, independent of the stage of development or features of functioning. A different meaning is embedded in the concept of “functional systems”. These are dynamic associations of organs and body structures aimed at achieving an adaptive result important for the body according to the principle of self-regulation. The structure of the functional system involves organs belonging to various anatomical systems. Along with the concept of “organ system”, the term “apparatus of organs” is sometimes used. It is correct to speak about the apparatus of organs in those cases when several whole systems (endocrine apparatus, voice) take part in the execution of a complex act.

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.