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Sep 17, 14 · Anatomy of the Sinuses This page was last updated on September 17, 14 THE PARANASAL SINUSES There are four pairs of paranasal sinuses, the frontal sinuses are located above the eyes, in the forehead bone The maxillary sinuses (antra of Highmore) are located in the cheekbones, under the eyes OTOLARYNGOLOGY HEAD & NECK SURGERYBlood supply supratrochlear, supraorbital and anterior ethmoidal arteries;Paranasal sinuses have four different pairs maxillary sinuses, frontal sinuses, sphenoidal sinuses, and ethmoidal sinuses(3) Their names come from the facial bones where they are located Maxillary sinuses, the largest of all paranasal sinuses, have thin walls usually penetrated by the long roots of the posterior maxillary teeth(4) Paranasal Sinuses Wikipedia What is the purpose of sinuses in the skull