Answer: It can tense or relax.
Explanation:
This kind of muscle is separated into two groups: the single-unit (unitary) and multi-unit smooth muscle. It can be found in the walls of the stomach, uterus, urinary bladder, intestines and passageways. It can be also found in the skin.
Smooth muscles can tense or they can relax and since they can do that, they are mostly controlled by neural elements in the body.
