The thick layer of the heart wall that contains contractile cardiac muscle tissue is the: 10:45 Biology Chapter 11 The thick layer of the heart wall that contains contractile cardiac muscle tissue is the: A) VISCERAL PERICARDIUM B) PARIETAL PERICARDIUM C) ENDOCARDIUM D) EPICARDIUM E) MYOCARDIUM Answer: E Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+