This is a test of commonsense. Complete the next sentence:

How to study the functions of motor neurons of the nervous system of humans 
Study the functions of motor neurons in humans. 
This article will discuss in this article motor neurons of the nervous system in humans due to its clinical significance in the practice of the neurological sciences of clinical medicine. Motor neurons are a class of cells of the nervous system in all living systems including human individuals.
Neurons of the nervous system in humans are classified according to their function into three main types. One is sensory type of neurons and the other is motor type of neurons and the third is called integrative type of neurons.