Kid Facts - Learn something new every day!

We've learned that the heart wall's soft inner most layer is the endocardium , the second layer of muscle is the myocardium and ...

We just learned that the heart wall's soft inner most layer is the endocardium , and the second layer of muscle is the myocardium . ...

We just learned about the first inside part of the heart wall called the endocardium . The next part of heart wall is the Myocardium . ...

We just learned about the pulmonary valve in the heart that opens for blood to go to the lungs for oxygen. The walls of the heart are m...

We've now learned about three of the four heart valves: The tricuspid valve between the right atrium and ventricle, the mitral val...

We've learned about the tricuspid valve between the right atrium and ventricle, and the mitral valve between the left atrium and ve...

We just learned about the tricuspid valve between the right atrium and ventricle. Another valve is called the mitral valve and it is b...

We just learned that there are heart valves that control the flow of blood in the chambers of the heart. One of the valves is called th...

We just learned about how the blood flows through the ventricles, atriums, veins and arteries. In between each of these areas is someth...

We just learned about the Pulmonary Artery We've now learned about all of the arteries and veins that pump blood all over the body. ...

We just learned that the right atrium fills up with deoxygenated blood from the body. After that the blood goes into the right ventricl...

We just learned about the jugular vein that brings deoxygenated blood from the head and neck down toward the heart. All of the arteries...

We've learned that oxygenated blood goes comes into the heart at the left atrium which is part of the heart, and then goes to the lef...

We've learned that oxygenated blood goes from the pulmonary veins to the left atrium which is part of the heart. The left atrium s...

We've learned that our blood gets filled up with good oxygen in the capillaries by the lungs, and then goes through tubes called the ...