This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
True about cardiac muscles are all except: 
Select and explain. 
A. Propey of spontaneous and rhythmic contraction, B. Cardiac muscle exhibits cross striations, C. Cardiac muscle cells are linear and longitudinal, D. Cardiac muscle is supplied by autonomic nerve fibers
C: Cardiac muscle cells are linear and longitudinal
Answer: C: Cardiac muscle cells are linear and longitudinal 
Explanation: Cardiac muscle consists of striated muscle fibers that branch and unite with each other. It forms the myocardium of the hea.Its fibers tend to be arranged in whorls and spirals, and they have the propey of spontaneous and rhythmic contraction. Specialized cardiac muscle fibers form the conducting system of the hea.Cardiac muscle is supplied by autonomic nerve fibers that terminate in the nodes of the conducting system and in the myocardium.