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7 terms

Level and names of branching

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Trachea
1 large branch
Bronchi
starts with 2 branchs and ends with 8
Bronchioles
has the most branching starting from 18 and going to 6x10^4
Terminal Bronchioles
last conducting zone branches at 6x10^4
Respiratory Bronchioles
Goes to 5x10^5
Alveolar Ducts
a lot of branches but not quite endings
Alveolar Sacs
Finally branches at 8x10^6