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chapter 3 vocab

5 ATHENA ch 3 Scott Foresman 2008

vocabulary worddefinition
artery a type of blood vessel that carries blood away from the heart to other parts of the body
capillary the smallest kind of blood vessels
vein a type of blood vessel that carries blood from the cells back to the heart
valve an opening that allows blood to flow in one direction but stops it from flowing in the other direction
mucus a sticky, thick fluid that traps dust, germs, and other things that may be in the air
trachea a tube that carries air from the throat to the lungs
bronchioles tubes that branch out from the bronchi
air sacs tiny thin-walled pouches in the lungs
esophagus a tube in the throat with rings of muscle that help you to swallow food
Created by: bgagnon