Final answer:
Cardiac muscle has three main characteristics: it is found only in the heart, it is striated, and it is under involuntary control.
Step-by-step explanation:
Cardiac muscle has three main characteristics:
- It is found only in the heart and forms the contractile walls of the heart.
- Cardiac muscle is striated, which means it has a striped appearance under a microscope, similar to skeletal muscle.
- Cardiac muscle is under involuntary control, meaning it contracts automatically without conscious effort.