Assertion: pericardium's layer | /r/CapableOf | form simple squamous epithelium
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Source sentences:
text: The serous layer of the parietal pericardium, composed largely of mesothelium together with a little connective tissue, forms a simple squamous epithelium and secretes a small amount of fluid (normally about 25 to 35 ml), which keeps the two layers of pericardium from rubbing against each other and causing friction during the heart's muscle contractions.