Which sinuses are located above the nasal cavity?

The frontal sinuses are situated above the nasal cavity and are located within the frontal bone. These paired sinuses typically exist above the eyebrow region and connect to the nasal cavity via the frontonasal duct. Their primary roles include reducing the weight of the skull, enhancing resonance for the voice, and providing a buffer against facial trauma. The positioning of the frontal sinuses plays a significant role in sinus drainage and overall respiratory health.

In contrast, the maxillary sinuses are found within the cheekbones and are not above the nasal cavity. The ethmoid sinuses consist of a number of small air cells situated between the eyes, while the sphenoid sinuses are located further back in the skull, behind the ethmoid sinuses and the nasal cavity. Each of these sinuses has specific anatomical locations and functions that differentiate them from the frontal sinuses.