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5th Grade Ch 3 Sci
Vocabulary
Question | Answer |
---|---|
arteries | carries blood AWAY from your heart |
capillary | SMALLEST kind of blood vessel |
veins | carries blood TO the heart |
valves | an opening that allows blood vessels to flow (in one direction) |
mucus | THICK, STICKY FLUID that traps things in the air |
trachea | 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 | tube in the throat with RINGS OF MUSCLE that help you swallow food |