The hormonal system of the body is almost entirely controlled by the central nervous system. It normally does this by sending nerve impulses down axons to a gland. However, some special nerve cells can make hormones themselves, and deliver them to glands which act as storage organs. The neurons of the neuroendocrine system are large; they are mini factories for producing secretory products. These cells are called neurosecretory cells, and they make neurohormones.