Heart Facts for beginners

welcome to moomoomath in science in this video I'd like to talk about your heart your heart has a very important job it pumps blood throughout your body the blood carries oxygen glucose and other nutrients to each cell and removes waste like carbon dioxide your heart is composed of four chambers the top chambers are called the atrium and the bottom chambers are called ventricles in between each chamber are valves the valves control the flow of heart they allow the blood to flow in one direction but stop the flow of blood in the opposite direction your heart is made up of cardiac muscle and pumps twenty-four hours a day every day your heart is about the size of your fist now let's take a look at the flow of blood through your heart blood from the lower parts of the body enters the heart through the inferior then Aqaba and from the head and upper parts of the body through the superior than a cap these two large veins empty into the right atrium the blood then passes through the tricuspid valve and into the muscular right ventricle the right ventricle contracts and sends the blood through the pulmonary valve and into the pulmonary arteries these arteries lead to the lungs in the plumbs carbon dioxide is exchanged for oxygen and the blood returns to the left side of the heart by way of the pulmonary veins it enters the left atrium and then passes through the bicuspid valve and into the largest and strongest chamber of the heart the left ventricle when the left ventricle contracts the blood is pushed pushed through the aortic valve and into the aorta which is the largest blood vessel in the body the blood travels throughout the body and this cycle repeats itself I hope that helps with understanding the flow of blood through the body thanks for watching and moomoomath uploads a new math and science video every day please subscribe and share