Heart Diagram for Kids

Heart is one of the crucial internal organs of the human body. The size of the heart is small but the tasks performed by the heart are phenomenal that helps humans survive in the toughest of the environment and situations. The heart is designed in such a way that all its tasks are carried out in a smooth manner. After going through the diagram you would realize the greatness of nature and how meticulously and carefully the heart is designed. This article provides a simple human heart diagram that is easy, comprehensive, and colorful. Along with this, one unlabeled heart diagram is also provided so that children can identify and fill in the right names in the given spaces. So kids lets go and learn something about our heart.

Structure of Human Heart

Given below is the detailed heart diagram. Observe each of the part carefully and try to remember the name of each part. I will also tell you about the function of each part mentioned in the diagram.

Heart Basics: Heart is essentially a muscle that expands and contracts continuously and we call it pumping. The primary function of the heart is to pump oxygen rich blood throughout the body. It beats for 72 times per minute. It is situated between the lungs in the chest cavity and weighs around 10-15 ounces.

Heart Wall: The heart wall consists of three layers known as epicardium, myocardium and endocardium. Epicardium is the outer layer, myocardium is the middle layer, and endocardium is the innermost layer. Myocardium makes up for the bulk of the heart and is responsible for the pumping and beating of the heart.

Atria and Ventricles: As you can see in the diagram of the heart, that heart is divided in four chambers, namely, right atrium, left atrium, right ventricle and left ventricle. Each of the chambers is separated by a muscle wall known as Septum. The left side of the heart receives oxygen rich blood from the lungs and pumps it out the whole body. The right side of the heart receives de-oxygenated blood from the body that is sent to the lungs to purify.

Valves: A valve connects each atrium to the ventricle below. The Mitral valve connects the left atrium with the left ventricle and Tricuspid valve connects right atrium with right ventricle. Apart from this, there are two more valves, known as pulmonary valves and aortic valves. Pulmonary valve separates the right ventricle from the left pulmonary artery. And aortic valve separates left ventricle from the aorta.

Blood Vessels and Blood Veins: Blood vessels play a major role in carrying purified blood from the heart to the rest of the body. They are connected to the upper half of the heart. Aorta is one of the largest blood vessels that carries purified nutrient rich blood away from the body. The left and right pulmonary arteries take the oxygen depleted blood from heart to the lungs. Superior Vena Cava and Inferior Vena Cava are the two main veins that carry blood back to the heart. The veins generally carry the de-oxygenated blood to the heart but pulmonary vein is an exception as it carries oxygenated blood from lungs to the left side of the heart. On the other hand, arteries carry purified blood to the rest of the body but pulmonary artery is the exception. It carries de-oxygenated blood from the right side of the heart to the lungs for purification.

From the above information it is clear how crucial the heart is so it is important for everyone to pay attention to the heart health to avoid any kind of heart diseases.

Now you know how complicated yet very smooth is the design of the heart. I hope this diagram helped you understand the structure of the heart well. Now there is a small exercise for you. Given below is the similar heart diagram that you need to observe carefully. The heart diagram is provided with blank spaces that you need to fill in with right names. Instead of copying from the above labeled diagram of the human heart, try to recall the names and fill in the blanks. As you fill in the blank also try to recall the function of that part. This would be a fun activity for you that would help you learn about the heart in a profound manner.

I hope you enjoyed working on the above heart diagrams. Now the next time you go the school, surprise your teacher and classmates with your knowledge about heart and its structure. All the best!