Heart PNG

About Heart

The heart is our most vital organ, occupying a large area between both lungs in the thoracic cavity. Its main task is to pump 9,000 liters of blood per day to all tissues and organs at a rate varying between 60-80 beats per minute. The size of an adult human heart is roughly equivalent to the size of his fist. It measures 12 cm in length, 9 cm in width, and 6 cm in back diameter. Has a hollow musculature. Its weight is between 280-340 grams in males and 230-280 grams in females.

Structure of the heart

The heart consists of muscles, nerves, valves, blood vessels, protective membranes, and slippery fluid. It has four chambers, two at the top and two ventricles at the bottom. On the right side of the heart is dirty blood and on the left is clean blood. The upper chambers are called atria, and the lower chambers are called ventricles. There are 4 heart valves between the atria and the ventricles and between the ventricles and the veins coming out of it. Heart valves are structures that properly direct the blood flow within the heart chambers and open and close with each heartbeat. There are three types of blood vessels. Blood vessels are responsible for carrying blood throughout the body. The veins that carry oxygenated blood from the left ventricle of the heart to the whole body are called arteries, and the veins that bring blood from the body to the heart are called veins. The vessels that connect the arteries and veins and take the blood to the cells are called capillaries.

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