Interaction is the set of processes through which a living being obtains information from the environment, takes decisions, controls its actions, and coordinates the functioning of the body itself.
There are various mechanisms responsible for obtaining information from the exterior and the interior of the body. These mechanisms are called receptors.
Analysis of the Information and Elaboration of a Response
This process is carried out by the nervous system and the endocrine system. The elaborated response is an order that is transmitted to the organs via different procedures.
Execution of a Response
The effectors, which are the organs responsible for carrying out a response, are as varied as the possible responses of the organism to the internal or external information.