Which sinus is located between the orbits?

The ethmoid sinus is located between the orbits, making it an integral part of the skull's sinus system. This sinus consists of multiple air cells that are situated within the ethmoid bone, which separates the nasal cavity from the orbits. The positioning of the ethmoid sinus plays a crucial role in the anatomy of the skull and is significant in relation to the eyes and nasal passages. Its proximity to the orbits allows for important connections to other sinuses and influences both the airflow and drainage of mucus.

In terms of anatomy, the maxillary sinus is found in the cheek area, the frontal sinus is located above the eyes in the forehead, and the sphenoid sinus resides deeper in the skull, towards the base of the skull, behind the nasal cavity. This clear distinction in location confirms why the ethmoid sinus is the correct answer regarding its position between the orbits.