Which nervous system instructs the activities of smooth muscles?

A) Autonomic nervous system
B) Central nervous system
C) Peripheral nervous system
D) None of these

The autonomic nervous system is responsible for instructing the activities of smooth muscles, which are found in organs such as the digestive tract, blood vessels, and respiratory system. The autonomic nervous system regulates these muscles without conscious control, in contrast to skeletal muscles which are under voluntary control regulated by the central nervous system.