Pertaining to the heart, what substance acts as a lubricant by reducing friction between opposing surfaces?

Question

Biology

Kristian Hudson

14 July, 20:42

Pertaining to the heart, what substance acts as a lubricant by reducing friction between opposing surfaces?

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Keyon Schroeder · Answer 1

Pericardial fluid

Pericardial fluid is a serous substance produced by the serous layer of the pericardium into the pericardial cavity. The pericardial fluid reduces friction by lubricating the epicardial surface and allows the two membranes to glide over each other with every heart beat.