What is another word for pericardial cavity?
Pronunciation: [pˌɛɹɪkˈɑːdɪəl kˈavɪti] (IPA) 
The pericardial cavity is a space which contains the heart. Other words that refer to this space include, the heart sac, the pericardium, and the pericardial sac. The pericardium surrounds the heart, and anchors it to surrounding muscles and bones. It is a double-walled membrane, consisting of the outer fibrous layer and the inner serous layer. The pericardial sac is a cavity that protects the heart from possible infection and other damages. The pericardium also prevents the heart from excessive expansion and helps the heart from compressing excessively. Each of these words refer to the sac-like structure around the heart which protects and assists this vital organ.
