Final answer:
The maxillary sinus, situated below the orbits, helps lighten the skull and add resonance to the voice, but can be prone to infections due to drainage difficulties.
Step-by-step explanation:
The specific function of the maxillary sinus, which is located anteriorly and inferior to the eyes within the right and left maxillary bones, includes reducing the mass of the skull bone, thus helping to lighten the weight of the skull, and adding resonance to the voice. The maxillary sinuses are the largest of the paranasal sinuses and are most commonly involved in sinus infections. Their drainage can often be problematic due to the position of their connection to the nasal cavity being high on the medial wall, making the maxillary sinuses difficult to adequately drain.