QuestionJune 4, 2025

Which of the following layers of the heart and their functions are correctly matched? Multiple Choice Epicardium-protective inner lining of the heart chambers and valves Pericardium-protective inner f lining of the heart chambers and valves Myocardium-cardiac m muscle tissue that pumps blood d out of the heart chambers Endocardium-protective outer covering

Which of the following layers of the heart and their functions are correctly matched? Multiple Choice Epicardium-protective inner lining of the heart chambers and valves Pericardium-protective inner f lining of the heart chambers and valves Myocardium-cardiac m muscle tissue that pumps blood d out of the heart chambers Endocardium-protective outer covering
Which of the following layers of the heart and their functions are correctly matched?
Multiple Choice
Epicardium-protective inner lining of the heart chambers and valves
Pericardium-protective inner f lining of the heart chambers and valves
Myocardium-cardiac m muscle tissue that pumps blood d out of the heart chambers
Endocardium-protective outer covering

Solution
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Answer

Myocardium-cardiac muscle tissue that pumps blood out of the heart chambers Explanation 1. Analyze each layer and its function - **Epicardium**: This is the outermost layer of the heart, not an inner lining. It provides a protective layer but does not line chambers or valves. - **Pericardium**: This is a fibrous sac surrounding the heart, providing protection and anchoring, not lining chambers or valves. - **Myocardium**: This is the muscular middle layer responsible for contracting and pumping blood out of the heart chambers. Correctly matched. - **Endocardium**: This is the innermost layer that lines the heart chambers and valves, not the outer covering.

Explanation

1. Analyze each layer and its function<br /> - **Epicardium**: This is the outermost layer of the heart, not an inner lining. It provides a protective layer but does not line chambers or valves.<br /> - **Pericardium**: This is a fibrous sac surrounding the heart, providing protection and anchoring, not lining chambers or valves.<br /> - **Myocardium**: This is the muscular middle layer responsible for contracting and pumping blood out of the heart chambers. Correctly matched.<br /> - **Endocardium**: This is the innermost layer that lines the heart chambers and valves, not the outer covering.
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