Respiratory system.........?

by Ron Sombilon Gallery

Respiratory system.........?what's the order of oxygen entering our respiratory system starting either in the mouth or nose?

Posted by Mauri
Nose/mouth, pharynx, larynx, trachea, bronchi, bronchioles, right/left lung, and lastly the alveoli

Know better? Leave your own answer in the comments! Facts and information on the human digestive system including how it works and related digestion health problems.

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