my heart

my heart is made up of its own unique muscles, beating an average of 70 times a minute. the wall of my heart consists of three layers: epicardium, myocardium, and endocardium. my heart has four chambers and weighs approximately two hundred and fifty grams. because of my heart, my left lung is smaller than my right lung. my heart pumps around nine thousand liters of blood daily, and it can no longer love anyone.