| Index: > A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
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Its largest constituent is connective tissue and functions as a protective layer - hence being thick, and contains pericardial fluid .
| Cardiovascular system - Heart | Edit |
| Pericardium - Epicardium - Myocardium - Endocardium - Purkinje fibers - Cardiac pacemaker - Sinoatrial node - Atrioventricular node - Heart valves |