HOSA Dental Terminology Test 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 1775

What is the largest of the paired paranasal sinuses?

Frontal sinus

Maxillary sinus

The maxillary sinus is the largest of the paired paranasal sinuses, situated in the maxillary bone, which forms the upper jaw. This sinus is located on both sides of the nasal cavity and plays a significant role in the respiratory system. Its size and position allow it to contribute to functions such as lightening the weight of the skull, contributing to voice resonance, and producing mucus that helps humidify the air we breathe.

In comparison, the frontal sinus, while notable, is smaller and located within the forehead. The sphenoid sinus, situated deep within the skull behind the nasal cavity, is also smaller and less prominent. The ethmoidal sinus consists of a group of small air cells located between the nose and the eyes. Each of these sinuses has distinct functions and sizes, with the maxillary sinus being the most significant in terms of volume.

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Sphenoid sinus

Ethmoidal sinus

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