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white blood cells
these blood cells change shape as they do their job and protect your body from germs
this tube-like structure is between the trachea and esophagus and is responsible for your voice
this structure covers the trachea when you swallow so food does not "go down the wrong pipe"
the tiny sac-like structures int he lungs where the gases (carbon dioxide and oxygen) are exchanged; rhymes with ravioli
the sticky fluid that traps dust, germs, andother particles in the air to protect the respiratory system
responsible for transporting nutrients, wastes, oxygen and carbon dioxide to and from all cells
responsible for taking in oxygen through the nose and mouth to the trachea to the lungs for use and then removing carbon dioxide; cleans the air you breathe.
the largest part of blood that carries food from the digestive system to cells and carries away wastes
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