ANSWER:
Unlike smooth muscles, cardiac muscle is striated.
Step-by-step explanation:
The cardiac muscles are the muscular wall of the heart whereas smooth muscles are found all over the body.
Cardiac muscles pump blood whereas smooth muscles are responsible for the "rhythmic contractions" in the body that move contents in the digestive system or the urinary tract.
The cardiac muscles cannot be replaced once they are damaged unlike smooth muscles that can be replaced when they degenerate.