Question

multiple choice question
which fluid fills the pericardial cavity and lubricates the membranes, allowing the heart to beat with minimal frictio

• pericardial fluid
• cardiac fluid
• visceral fluid

Explanation:

The pericardial cavity is filled with pericardial fluid, which lubricates the membranes around the heart to reduce friction during beating. Cardiac fluid is not the correct term for this function, and visceral fluid is a more general term not specific to the heart's pericardial cavity.

Answer:

A. Pericardial fluid