Assertion: pericardium's layer | /r/HasProperty | mesothelium
Facets:
value: largely
type: DEGREE
value: with a little connective tissue
type: OTHER
Source sentences:
text: What layer of pericardium is composed mainly of mesothelium, a single layer of flattened cells forming an epithelium that lines both the internal surface of the fibrous pericardium and the external surface of the heart?
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.