The fluid that prevents friction as the heart beats is:
A)plasma
B)serous fluid
C)synovial fluid
D)mucus

Question

Quizplus · Accepted Answer

The fluid that prevents friction as the heart beats is called serous fluid. It is a clear, watery fluid that is found in the pericardial sac surrounding the heart. Its main function is to reduce friction between the pericardial membranes as the heart beats. Plasma is the liquid component of blood, synovial fluid is found in joints and provides lubrication, and mucus is a viscous fluid secreted by different membranes and glands in the body. None of these fluids play a role in preventing friction in the heart.

The Fluid That Prevents Friction as the Heart Beats Is