Assertion: endocardium's layer | /r/HasProperty | mesothelium
Facets:
value: with a little connective tissue
type: OTHER
value: largely
type: DEGREE
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.