<Ul> <Li> Ethmoid sinus cavities which are located between the eyes . </Li> <Li> Frontal sinus cavities which can be found above the eyes (more in the forehead region). </Li> <Li> Maxillary sinus cavities are located on either side of the nostrils (cheekbone areas). </Li> <Li> Sphenoid sinuses that are located behind the eyes and lie in the deeper recesses of the skull . </Li> </Ul> <Li> Ethmoid sinus cavities which are located between the eyes . </Li> <Li> Frontal sinus cavities which can be found above the eyes (more in the forehead region). </Li> <Li> Maxillary sinus cavities are located on either side of the nostrils (cheekbone areas). </Li>

What purpose do sinuses serve in the skull