Integrating sensory information and neural functions is a function of the

Sensory neuron acts to receive the vague sensory infor

Nervous system

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a. transmit sensory messages and regulate body functions.

The nervous system is the organ system responsible for the many neural activities in the human body which includes the interaction of the brain and the spinal cords with the nerve cells in the body or the periphery. 
Two dividions are the central nervous system: brain and spinal cord
Peripheral Nervous system: neurons

Peripheral Nervous system has autonomic and somatic nervous system

Animals will lose energy because it is converted to heat