Matters of the heart
About the size of your fist, weighing only 8-10 ounces, comprised of 4 chambers and 4 valves, with an inherently rhythmic electrical supply that is in continuous operation and constantly adjusts to the body’s ever-changing demands, this amazing organ automatically beats 100,000 times/day as it pumps 2,000 gallons of life-giving blood to the body’s 75 trillion cells through a...
