Ventricle (heart)

What is a Ventricle?

A ventricle is one of the two big rooms at the bottom of the heart. These rooms are very important because they push blood out to the rest of your body and to your lungs. The blood that fills a ventricle comes from a smaller room above it called an atrium.

How Do Ventricles Work?

There are two ventricles in your heart: a right one and a left one. They work together in a system called double circulation. The right ventricle sends blood to your lungs. The left ventricle sends blood to the rest of your body. This helps make sure your body gets the oxygen it needs to work properly.

Ventricles have strong walls because they need to work hard to push blood all around your body and to your lungs. The left ventricle has even stronger walls than the right one because it sends blood to most of your body.

Inside the ventricles, there are special muscles called trabeculae carneae. These muscles help keep important heart doors open, like the tricuspid valve and the mitral valve.

Why Are Ventricles Important?

Ventricles are very important because they pump blood out of your heart. When they squeeze, they push blood out to your body and lungs. When they relax, they fill up with more blood to start the cycle again. This keeps your body getting the blood it needs to stay healthy and strong.