Final answer:
The word part 'pharyngo-' refers to the 'throat', which is associated with the pharynx, a structure that connects the mouth and nasal cavity to the esophagus and larynx.
Step-by-step explanation:
The word part pharyngo- is related to the pharynx, which is a tube-like structure connected to the mouth and nasal cavity, aiding in both the respiratory and digestive systems. The pharynx is divided into three major regions: the nasopharynx, which is involved only in breathing and speech; the oropharynx, which is a passageway for both air and food; and the laryngopharynx, which is connected to the esophagus. Therefore, the meaning of the word part pharyngo- is related to the throat.