Question

ordering question
click and drag on elements in order
place in order the three layers of the heart wall, listing the deepest layer at the top.
instructions
epicardium
myocardium
endocardium
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Explanation:

The endocardium is the innermost (deepest) layer of the heart - wall, followed by the myocardium, and then the epicardium which is the outermost layer.

Answer:

1. Endocardium
2. Myocardium
3. Epicardium