27. If your friend asked you to explain how air flows through the upper
respiratory tract, which of the following would you likely say?
a. Inhaled air passes from the nasal or oral cavity through the trachea
and pharynx and into the larynx.
b. Inhaled air passes through the pharynx into the nasal or oral cavity
and then through the larynx into the trachea.
c. Inhaled air passes through the larynxinto the nasal or oral cavity and
then through the trachea into the pharynx.
d. Inhaled air passes from the nasal or oral cavity through the pharynx
and larynx and into the trachea.