The newly oxygen-rich blood (shown in red) returns to the heart and enters the left atrium. Blood flows through the left atrium into the left ventricle. The left ventricle pumps the oxygen-rich ...

The newly oxygen-rich blood (shown in red) returns to the heart and enters the left atrium. Blood flows through the left atrium into the left ventricle. The left ventricle pumps the oxygen-rich ...

As your heart expands, blood flows from your body into its chambers. First the atria, then the ventricles ... film is from the BBC series, Inside the Human Body. The 3D footage brings the topic ...

The left-hand side pumps oxygenated blood around the body. Each side of the heart consists of an atrium and a ventricle which are two connected chambers. The atria (plural of atrium) are where the ...

It also contributes to oxidative stress in the atria—the heart's upper chambers—altering their size ... the upper chambers of ...