Easy diagram of human heart

The heart is a large muscular organ with the very important job of circulating blood through the blood vessels to the body. Located in the center of the chest,the heartis the hardest working muscle in the human body— always working, even while we are sleeping.The heart and blood vessels together make up the body's cardiovascular system and are vital to supplying the body with the necessary oxygen and nutrients needed to survive.When you breathe, your lungs take in oxygen. The heart pumps blood to the lungs to pick up oxygen, and then it pumps blood through the body to deliver that oxygen. The animations below show how a normal heart pumps blood. They also explain the changes that happen to a normal heart right after the fetus is born. The structure of the heart The heart is a two-sided pump made up of four chambers: the upper two chambers called atria and the lower two calledthe ventricles. • On the right side of the heart, the right atrium and right ventricle work to pump oxygen-poor blood returning from the body back to the lungs to be reoxygenated. • On the left side of the heart, the left atrium and left ventricle combine to pump oxygenated blood back through the body. • Muscular walls, called septa or septum, divide the heart into two sides and keep the two kinds of blood from mixing. Heart valves There are four valves within the heart.Each valve has flaps that prevent blood from flowing in the wrong direction— opening to allow forward flow of blood and closing to pre...

Worksheet showing unlabelled heart diagrams Using our unlabeled heart diagrams, you can challenge yourself to identify the individual parts of the heart as indicated by the arrows and fill-in-the-blank spaces. This exercise will help you to identify your weak spots, so you’ll know which heart structures you need to spend more time studying with our heart quizzes. Interactive quizzes At Kenhub, you can use several interactive quiz types to learn about the structure of the heart or to revise what you already know. What makes quizzes such a great way to learn anatomy? Quizzes allow you to identify any gaps in your knowledge, so you’ll know exactly where you need to focus your study efforts. Want to breeze through your heart anatomy Try our interactive heart anatomy quizzes to see where your knowledge levels are currently sitting. These clever heart anatomy quizzes will... • Adapt to your knowledge, repeating questions that you got wrong • Give you the option to test yourself with english or latin terminology • Test your ability to correctly identify structures • Challenge your ability to connect anatomy with clinical practice • Let you see a structure from multiple perspectives, for extra clarity You can start learning the anatomy of the heart with the following quiz.