The heart is a hollow muscle about the size of your
fist. The heart has four chambers. There are two chambers on
the left side and two chambers on the right side. Each chamber has a
specific job to do. Review the heart below.
Carbon dioxide rich blood is shown in blue and oxygen
rich blood is shown in red. The upper right chamber or Right Atrium
receives blood from the veins through the Vena Cava. Blood from the
veins contains little oxygen and is carbon dioxide rich. The blood next
travels to the lower right chamber or Right Ventricle which pumps the
blood to the lungs.
The lungs remove the carbon dioxide and replenish the
blood with oxygen. The blood returns to the heart in the upper left
chamber or Left Atrium. The blood then travels to the lower left
chamber or Left Ventricle which pumps the blood through the Aorta to all
the parts of the body.
Complete the questions below.
The heart is a muscle about the size of your
Carbon dioxide rich blood travels from the body into the heart through
receives carbon dioxide rich blood from the body.
Blood travels from the Right Atrium to the
to be pumped to the lungs.
Blood from the Right Ventricle is
The lungs replace the carbon dioxide with
Oxygen rich blood is returned to the heart into the Left
Blood passes through the Left Atrium to the
The Left Ventricle pumps oxygen rich blood through the
to all parts of the body.
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