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Yes, after being placed in the mouth and chewed, the food bolus is swallowed, passing through the oropharynx into the esophagus.
The plural form of oropharynx is oropharynxes.
The plural form of oropharynx (the oral part of the pharynx) is oropharynges
Oropharynx is Singular
Oropharynges is Plural
The oropharynx. (oral part)