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.
a fluid that has the characteristics of serum. Fluid secreted by serous membranes that reduces friction in the serous cavities (pleural, pericardial, and peritoneal). fluid that has the characteristics of serum. Fluid secreted by serous membranes that reduces friction in the serous cavities (pleural, pericardial, and peritoneal).