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Needed by EVERY cell in the body. It is removed from the air while in the lungs and is added to the blood through the capillaries of the alveoli. It then enters the heart to be pumped throughout the body.
It is used by the cells to release energy from food.
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Tiny blood cells. They are the smallest blood vessels. They line the alveoli.
These blood vessels are so small that the blood cells move through them in single file!
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Transports oxygen and nutrients to the cells of the body and carbon dioxide and waste away from the cells. It flows from the heart to other organs and back to the heart. |
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The two LOWER chambers of the heart.
The one on the left has a thicker wall because it pumps blood throughout the body. The one on the right pumps blood to the lungs.
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The two UPPER chambers of the heart. These chambers collect blood from the veins and pump it to the lower chambers.
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The body's largest artery. Blood is pumped from the left ventricle here where it is pumped to EVERY other organ EXCEPT the lungs. |
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Flaps of tissue that keep the blood from flowing in the wrong direction.
These flaps also connect the 4 chambers of the heart to each other.
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The blood vessels that carry blood from the body to the heart in the right atrium.
There are two vena cava. The inferior (lower) vena cava carries blood from the lower part of the body back to the heart. The superior (upper) vena cava carries blood from the upper part of the body back to the heart. |
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Tiny cells in the blood that help the blood to clot and seal a cut in the blood vessel. |
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The organ that pumps blood throughout the body. |
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The watery part of the blood. More than half of the blood is this substance. |
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One of the types of blood cells. They are large and they help the body to fight infection and disease. They capture bacteria and release chemicals that fight infections. |
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One of the types of blood cells. These cells carry oxygen.
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A blood vessel that carries oxygen-rich blood away from the heart to the cells in the body.
They have thick muscular walls and divide into smaller and smaller branches.
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Blood vessels that carry oxygen-poor blood back to the heart from the cells of the body. |
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Its purpose is to transport materials (like oxygen and nutrients) through the body. |
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Tubes that carry blood throughout the body. |
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