Control of the body is accomplished by nervous system and endocrine systems.
Explanation :
Nervous system of the body deals with the reception of the signal and producing its appropriate motor action. Nervous system controls both the voluntary and involuntary functions of the body. Neurons which are the part of nervous system helps in the sensation of whole body through which many activities like locomotion and reasoning can be executed.
Endocrine system influences the activity of a group of cells to produce a specific protein or act in a specific way. Endocrine system releases protein or steroid hormones which can act on the other parts of the body to produce other hormones are proteins which influences the functioning of other cells. Hence, both nervous system controls and endocrine system has collective activity for controlling the body. Whereas other body systems like circulatory and respiratory system are only concerned with the circulation of blood and breathing.
