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CDC 1-2

3 Layers that make the structure of the heart

QuestionAnswer
The outer layer is the ______, a thin sac covering the heart muscle. pericardium
The second layer is the ______, which is the thick, muscular portion of the heart. myocardium
The _____ is the thin membrane that lines the inner surface of the heart muscle. endocardium
Created by: jhey33