Question:
A single layer of cells that composes epicardium is called ...............
A single layer of cells that composes epicardium is called ...............
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Mesothelium is the tissue that forms the epicardium, the outer layer of the heart, as well as the lining of body cavities.
Updated On: Mar 6, 2026
- endothelium
- mesothelium
- ependyma
- epidermis
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the structure of the epicardium.
The epicardium is the outer layer of the heart wall. It is composed of mesothelium, which is a single layer of flat cells.
Step 2: Analyzing the options.
(A) endothelium: Incorrect. Endothelium lines blood vessels, not the heart.
(B) mesothelium: Correct. Mesothelium is the tissue that forms the epicardium of the heart.
(C) ependyma: Incorrect. Ependyma lines the ventricles of the brain and spinal cord, not the heart.
(D) epidermis: Incorrect. Epidermis is the outer layer of skin, not related to the heart's epicardium.
Step 3: Conclusion.
The correct answer is (B) mesothelium, as it is the tissue layer that forms the epicardium.
The epicardium is the outer layer of the heart wall. It is composed of mesothelium, which is a single layer of flat cells.
Step 2: Analyzing the options.
(A) endothelium: Incorrect. Endothelium lines blood vessels, not the heart.
(B) mesothelium: Correct. Mesothelium is the tissue that forms the epicardium of the heart.
(C) ependyma: Incorrect. Ependyma lines the ventricles of the brain and spinal cord, not the heart.
(D) epidermis: Incorrect. Epidermis is the outer layer of skin, not related to the heart's epicardium.
Step 3: Conclusion.
The correct answer is (B) mesothelium, as it is the tissue layer that forms the epicardium.
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