FINALS: Paranasal Sinuses Flashcards
Functions of paranasal sinuses
Act as resonators of the voice
Reduce the weight of the skull
Cavities found in the interior of maxilla frontal sphenoid and ethmoid bones
Paranasal sinuses
Paranasal sinuses 4
Frontal
Maxillary
Ethmoidal
Sphenoidal
Located within the body of maxilla
Pyramidal in shape
Maxillary sinus
Maxillary sinus
Roof:
Floor:
R: floor of the orbit
F: alveolar process
Two in number
Contained in frontal bone
Triangular
Frontal sinus
Mucous membrane of frontal sinus is supplied by
Supraorbital nerve
Lie within sphenoid bon
Sphenoidal sinus
Sphenoidal sinus opens into the
Sphenoethmoidal recess
Mucous memb of sphenoidal sinus is supplied by
Posterior ethmoidal nerves
Contained within the ethmoid bone
Between nose and orbit
Ethmoidal sinus
3 grps of ethmoidal sinus
Ant
Middle
Post
Ant ethmoidal sinus opens in the
Infundibulum
Middle eth sinus opens
Middle meatus
Post eth sinus opens
Superior meatus