The Pericardial Cavity is Actually ________

Question

The pericardial cavity is actually ________.
A) a potential space
B) a large space
C) filled with mucin
D) contains 150+ mL of pericardial fluid
E) increases friction between opposing membranes

Accepted Answer

The pericardial cavity is considered a potential space because it normally contains a small amount of lubricating fluid, allowing the heart to move smoothly within the pericardium. It is not a large space, does not contain mucin, typically contains less than 50 mL of pericardial fluid, and actually reduces friction between the heart and pericardium.