All autonomic nerves are motor.
Targets include the pacemaker of the heart, and the smooth muscle and glands of viscera. The sympathetic division acts occasionally in response to emergencies. The parasympathetic division is composed of many independent subsets of nerves that individually activate portions of parasympathetic innervation. Finally, the enteric nervous system is a large but diffuse number of neurons dispersed throughout the muscular walls of hollow viscera. In this way a simple instruction can be spread economically to a large number of effectors.