Answer:
-Ethmoidal air cells - A network of cells whose mucous secretions flush the surfaces of the nasolacrimal canal
-Maxillary sinuses - Largest of the sinuses, and produce mucus secretions that flush the inferior surfaces of the nasal cavities
-Sphenoidal sinuses - Extremely small in size and located on either side of the body of the sphenoid, superior to the sella turcica
-Frontal sinuses - Always extremely large in size and variable in time of appearance
Maxillary sinuses - Largest of the sinuses, and produce mucus secretions that flush the inferior surfaces of the nasal cavities
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