Commissural impulses.
Integrating impulses.
Sensory impulses.
Voluntary motor impulses.
The anterior horn cells is the ventral region of the spinal cord. This region comprises the motor neurons which have an affect on movement of skeletal muscles. This is the area where there are cell bodies of motor neurons. When this area is damaged or destroyed due to any disease, the motor neurons will be destroyed. This will result in the loss of voluntary movements operated due to motor impulses. Thus, the correct answer is option D.