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Name _____________________________
Date ___________________
Word List
antibodies
antigens
aorta
arteries
atria
blood
blood vessels
capillaries
heart
hemoglobin
plasma
platelets
pulse
red blood cells
valves
veins
ventricles
white blood cells
Matching
Match each definition with a word.
1. This is the red liquid that is carried by blood
vessels throughout the body.
2. These are the lower chambers of the heart.
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blood
3. These are flaps that stop blood from flowing
the wrong way.
4. These are the upper chambers of the heart.
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5. A substance that causes the body to produce
antibodies.
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7. This is what makes the blood red. It carries
oxygen in the blood.
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9. This is the organ in your body, about the size
of a fist, that pumps blood throughout the
body.
6. These are large blood vessels that carry blood
to the heart.
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8. This can be taken in your wrist to count
heartbeats in a minute’s time.
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10. These are the tiny blood cells that stop
bleeding.
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11. These are the tubes which carry blood
throughout the body.
12. These are the cells that contain hemoglobin
and carry oxygen in the blood.
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13. These are proteins that are made by white
blood cells. They react to something foreign
in the body such as germs, bacteria, and
viruses.
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15. These are the large blood vessels that carry
blood away from the heart.
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14. This is the main and largest artery in the
body. It carries blood, which has oxygen,
away from the left side of the heart to every
part of the body, except for the lungs.
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16. These are the tiny blood vessels that connect
arteries and veins.
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17. These are the cells which fight disease in the 18. This is the clear, liquid part of the blood that
body.
holds proteins, digested foods, wastes, and
other substances.
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