Page 174 - Edited - Webster HEAD AND NECK - part 1
P. 174
NOTICE (1) THIN WALLS → medial → ethmoid air sinuses; medial part of inferior wall → maxillary air sinus → superior → middle cranial fossa
(2) THICK WALLS laterally & lateral part of inferior wall.
The thin areas walls easily
fractured facial trauma.
ANTERIOR CRANIAL FOSSA
ORBITAL PLATE
(FRONTAL BONE)
FRONTAL
CRISTA GALLI
CRIBRIFORM ETHMOID
PLATE
ETHMOID ETHMOID
AIR AIR ORBIT
ORBIT SINUSES SINUSES HN 142
ZYGOMA MAXILLARY MAXILLARY
AIR SINUS CAVITY AIR SINUS
NASAL
MAXILLA
ORAL
CAVITY
BOUNDARIES OF THE ORBIT (3): CORONAL SECTION (SEMI-SCHEMATIC)
