Which layer forms the outer surface of the heart?

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Master AQA A Level PE Cardiovascular System with flashcards and multiple-choice questions. Dive into detailed explanations for each query and be exam-ready!

Multiple Choice

Which layer forms the outer surface of the heart?

Explanation:
The outer surface of the heart is formed by the epicardium. This layer is the visceral part of the serous pericardium and lies directly on the heart’s surface, covering the muscular wall (the myocardium) and continuing around the vessels. Beneath it is the myocardium, and inside the heart are the endocardium lining the chambers. The pericardium surrounds the heart as a sac (fibrous and serous layers), but the actual outer surface of the heart itself is the epicardium.

The outer surface of the heart is formed by the epicardium. This layer is the visceral part of the serous pericardium and lies directly on the heart’s surface, covering the muscular wall (the myocardium) and continuing around the vessels. Beneath it is the myocardium, and inside the heart are the endocardium lining the chambers. The pericardium surrounds the heart as a sac (fibrous and serous layers), but the actual outer surface of the heart itself is the epicardium.

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