Discussion
Match layers of heart with their positions :
| Column-I (Layers of heart) | Column-II (Positions) |
|---|---|
| 1. Pericardium | a. middle muscular layer |
| 2. Myocardium | b. inner lining |
| 3. Endocardium | c. lining of entire heart |
| 4. Endothelium | d. outer covering |
Choose the most appropriate option from below :
Answer: B
The correct matching is 1-d, 2-a, 3-b, 4-c.
- Pericardium: the double-layered sac forming the outer covering of the heart (d).
- Myocardium: the thick middle layer of cardiac muscle that does the pumping (a).
- Endocardium: the inner lining of the heart chambers and valves (b).
- Endothelium: the smooth single layer of cells lining the whole heart and the blood vessels (c).
Pericardium-outer and myocardium-middle are the two pairs that settle it; only one option has both.
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