Guess what women and the heart have in common? Well, except that it's inside them :) A woman and her heart can't live without their bags🙌🏻 Girls love the prada, and the heart loves its pericardium. This is the outer connective tissue sheath that wraps around our motor on all sides. The pericardium has two sheets with a cavity between them filled with serous fluid. The pericardium separates the heart from the other organs of the chest, helps the heart to fill the atria with blood, and prevents the heart from shifting and overstretching during exercise.