The APA style allows for in-text citations, direct quotations, and endnotes and footnotes. It is also enables the author to use the past tense of verbs in the reportage. Standards of the APA style include: 1  Bibliographic list of references. 2  Alphabetical order by author in the bibliographic list, then chronological by work.
Function [edit]. The pericardial fluid reduces friction within the pericardium by lubricating the epicardial surface allowing the membranes to glide over each other with each heart beat.
Choose the following statement that is not completely correct regarding serous membranes. 1  Serosa are very thin, double-layered structures. 2  Visceral pericardium covers the outer surface of the heart, and parietal pericardium lines the internal walls of the heart.  Serous membranes secrete a watery lubricating fluid.