Chest pain is not a symptom you should ever ignore, for obvious reasons. Chest pain, as almost anyone knows, may indicate a cardiac problem. For this reason alone, if you have chest pain you should be evaluated by a doctor.
Definition of cardiac muscle. : the principal involuntary-muscle tissue of the vertebrate heart made up of striated fibers joined at usually branched ends and functioning in synchronized rhythmic contraction.
Cardiac muscle. Definition. noun, plural: cardiac muscles. (1) The heart muscle of the vertebrates. (2) myocardium. Supplement. The muscles of the vertebrates can be classified into three major types: (1) skeletal muscle, (2) smooth muscle, and (3) cardiac muscle.he cardiac muscle is the muscle of the heart. Both cardiac muscle and the skeletal muscle have rather conspicuous striations when viewed under the microscope (in which the smooth muscle is lacking, thus the name).