anatomy 20 - 25.3 location of paranasal sinuses 4 sets of...

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- 25.3 location of paranasal sinuses o 4 sets of sinuses (not pairs because the ethmoidal are actually all connected) Maxillary sinuses Large Literally hallowed out areas of your maxillary bone Sphenoidal sinuses Ethmoidal sinuses Frontal sinuses o They are all hallowed out areas of their respective bone Why? Basically to provide you with the ability to keep your head upright as you go through the years of life o The pivot point of your skull is posterior of the mid-line; so there is much more of the skull anterior to the pivot point- that means as you go through the ages, the muscles in the back of your head would literally get stretched out after awhile – hollows out areas make the front area of your head lighter than the back of your head – allows you to keep your head level o Drain into nasal passages What lines all cavities of your body? Epithelial tissue Why didn’t nature just seal off all hollow areas? They produce waste
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anatomy 20 - 25.3 location of paranasal sinuses 4 sets of...

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