Controls the behavior of all systems in the body, are related to each other by working together with system logs were devoid of glands also serves to receive and respond to external stimuli.
Controls the operation of all systems in the body. Relative to each other by working with the endocrine system also receives and responds to external stimuli.
Controlling function of every system in the body. To connect by working with the endocrine system, it also serves to receive and respond to a thing outside.