PATHOLOGY

Detailed explanation-1: -The hardest working muscle is the heart. It pumps out 2 ounces (71 grams) of blood at every heartbeat. Daily the heart pumps at least 2, 500 gallons (9, 450 liters) of blood. The heart has the ability to beat over 3 billion times in a person’s life.

Detailed explanation-2: -The left ventricle is the largest and strongest chamber in your heart. The left ventricle’s chamber walls are only about a half-inch thick, but they have enough force to push blood through the aortic valve and into your body.

Detailed explanation-3: -True. The heart is a special muscle called “cardiac muscle.” It works constantly to pump blood through your body.

Detailed explanation-4: -Your heart is really a muscle. It’s located a little to the left of the middle of your chest, and it’s about the size of your fist. Your heart is sort of like a pump, or two pumps in one. It pumps blood around your body.