i do believe it is called a smooth muscle or an involuntary muscle.
Heart?
"Cardiac" is an adjective that refers to the heart, e.g. cardiac muscle (aka the heart). A synonym (one of few), would be "heart-related."
cardiac
Smooth cardiac muscle.
cardiac muscle cells are joined by intercalated disks.
Cardiac muscle is involuntary striated muscle. The cells of cardiac muscle have only one nucleus. The layer of the heart that contains cardiac muscle is called the myocardium.
Most of the myocardium is composed of cardiac myocytes.
cardiac muscles/involuntary muscle
cardiac muscle is striated cardiac muscle is not voluntary
Cardiac muscle.
Cardiac muscle forms the muscular wall of the heart. Cardiac muscle is involuntary muscle.
cardiac is cardiac and skeletal is skeletal.