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7 Cards in this Set

  • Front
  • Back
SPHENOIDAL SINUS

-located?
-drains into?
-pterygoid canal?
D. Sphenoidal sinus

1. Located within the body of the sphenoid (a bony septum, which is usu-
ally deviated, separates the two Sphenoidal sinuses); drains into the
sphenoethmoidal recess

2. The pterygoid canal, which transmits the nerve of the pterygoid canal,
may produce a posterior-to-anterior ridge along its floor
MAXILLARY SINUS

-anterior/posterior walls?
E. Maxillary sinus

1. Its anterior and posterior walls are formed by the anterior and infra-
temporal surfaces of the maxilla, respectively; its medial wall forms the
inferior part of the lateral nasal wall and the lateral wall extends into
the zygomatic bone
MAXILLARY SINUS

FLOOR
E. Maxillary sinus

2. Its floor is formed by the alveolar process of the maxilla and may ex-
hibit elevations produced by the roots of the upper molar teeth; its roof
is the floor of the orbit and may exhibit a posterior-to-anterior ridge
formed by the infraorbital groove and infraorbital canal
MAXILLARY SINUS

-DRAINS INTO
-EXTRACTION OF UPPER MOLAR
E. Maxillary sinus

3. Drains into the nasal cavity through the semilunar hiatus

4. Clinical note: extraction of an upper molar may create a fistula, or ab-
normal opening, between the maxillary sinus and oral cavity
NERVE/BLOOD

FRONTAL SINUS
F. Nerve and blood supply

1. Frontal sinus: supratrochlear and supraorbital nerves and vessels
NERVE/BLOOD

ANTERIOR/MIDDLE ETHMOIDAL AIR CELLS

POSTERIOR ETHMOIDAL AIR CELLS
2. Anterior and middle ethmoidal air cells: anterior ethmoidal nerve and
vessels

3. Posterior ethmoidal air cells and Sphenoidal sinus: posterior superior
lateral nasal nerves, posterior lateral nasal vessels, and the posterior
ethmoidal nerve and vessels
NERVE/BLOOD

MAXILLARY SINUS
4. Maxillary sinus: posterior superior alveolar, middle superior alveolar,
anterior superior alveolar, and infraorbital nerves; posterior superior
alveolar, anterior superior alveolar, and infraorbital vessels