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Through the nasopharynx, past the oropharynx and laryngopharynx into the trachea. From there it will travel down one of two bronchi into a smaller bronchiole and eventually into an alveolar sac.
Trachea, primary bronchi, secondary bronchi, tertiary bronchi, bronchioles, and alveoli!
The oxygen enters the body via the nose and mouth then travels down the trachea ( wind pipe ) then breaks into two bronchi (the bronchi splits the air into each lung) which then branches into lots of bronchioles which end in lots of alvioli.
The Trachea!
The Trachea comes down and splits into the 2 Bronchi at the Bifurcation of trachea, at the lowest point in the spit it is called the "carina". The two Bronchi are called the left and right primary bromchi, and then they quickly spit again into secondary bronchi. Hope that helps
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the air then flows into the primary bronchi.
Sperm duct and urethra.
It goes down your larynx, into the bronchial, then bronchi, then the aveoli.
to put simple food is broken down
Starting from the left and right bronchi, bronchus for singular, these branch down from the trachea. Then the bronchi branch off to smaller bronchi and these branch off to bronchioles. The bronchioles contain air sacs at the end called alveoli and alveolus for singular.
The vacuum created by down-ward movement of the diaphram.