Human Heart Lesson - Parts of the Human Heart - My Schoolhouse - Online Learning
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.
1. The heart is a muscle about the size of your
2. Carbon dioxide rich blood travels
from the body into the heart through
3. The Right
receives carbon dioxide rich blood from the body.
4. Blood travels from the Right Atrium to the
to be pumped to the lungs.
5. Blood from the Right Ventricle is
6. The lungs replace the carbon dioxide with
7. Oxygen rich blood is returned to the heart into the Left
8. Blood passes through the Left Atrium to the
9. The Left Ventricle pumps oxygen rich blood through the
to all parts of the body.
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