Skull Quiz Flashcards
Position of part with MML perpendicular?
Waters (Parietoacanthial)
What projection forms a 37 degree to the IR?
Reverse Waters
Acanthoparietal
What projection is the IOML // ? (Vertex of head on IR)
Submentovertex (SMV)
What projection is the IPL perpendicular?
Lateral Skull.
What’s different must you do for PA Axial Caldwell for sinuses?
Always do sinuses upright, never angle tube.
CR for AP/PA?
Nasion.
CR for PA Axial Caldwell (AP Axial)?
15 degrees caudal
15 degrees cephalic
CR for AP Axial Towns?
30 degrees caudal
2 inches above glabella
CR for Waters or Parietoacanthial?
Acanthion.
CR for Reverse Waters or acanthoparitial?
Acanthion.
CR for Submentovertex (SMV)?
Just below mental point.
CR for Lateral Skull?
2 inches above EAM.
CR for Lateral Facial?
Zygoma/Arch
CR for Lateral Sinuses?
1 inch posterior outer canthus.
CR for Lateral Nasal?
At nasion (no grid!)
EC for AP/PA
Petrous ridges orbits
EC for PA Axial Caldwell (AP Axial)?
PR lower 1/3 of orbits.
EC for AP Axial Towns?
Dorsom sellae plus posterior clinoid processes are within the foramen magnum.
EC for Waters (Parietoacanthial)
PR are just below the maxillary sinuses.
EC for Reverse Waters or Acanthoparitial?
PR are just below the maxillary sinuses.
EC for Submentovertex (SMV)?
PR are just below the maxillary sinuses.
Part of position with OML perpendicular?
AP/PA
PA Axial Caldwell (AP Axial)
AP Axial Towns
cranial bones
1 frontal 1 occipital 2 parietals 1 ethmoid 1 sphenoid 2 temporals
facial bones
2 nasal 2 lacrimal 2 maxillary 2 zygomatic 2 palatine 2 inferior nasal conchae 1 vomer 1 mandible
coronal suture
between frontal and parietal bones
sagittal suture
between the two parietal bones
squamosal suture
between temporal and parietal bones
lambdoidal suture
between occipital and parietal bones
calvaria
superior part of skull
floor of skull
where brain rests
fontanels
soft spots; located on infants where the cranial bones have not yet fused
fontal bone
frontonasal suture (nasion)
roof of orbit
frontal sinus
ethmoid bone
between orbits behind nasal bones cribiform plate crista galli perpendicular plate labyrinths (contain ethmoid sinuses)
parietal bones
sides and roof of cranium
sphenoid bone
sphenoid sinus sella turcica (pituitary gland) dorsum sellae (posterior part of sella turcica; bears the posterior clinoid processes
occiptial bone
articulates with the atlas
foramen magnum
external occipital proturberance (inion)
temporal bones
EAM
part of the zygomatic arches
petrous portion
TMJ
nasal bones
form superior wall of nasal cavity
lacrimal bones
foramen for tear duct
maxillary bones
lateral walls and floor of nasal cavity part of prominence of cheeks part of orbit alveolar process anterior nasal spine (acanthion)
zygomatic bones
part of zygomatic arches
part of orbit
palatine bones
part of roof of mouth
inferior nasal conchae
scroll-like appearance from nasal cavity
vomer
part of nasal septum
mandible
body rami symphysis angle (gonion) mental point TMJ
3 bones of orbital rim
frontal; zygoma; maxillary
nasal cavity
nasal bones & maxillary bones
roof of mouth (hard palate)
maxillary bones & palatine bones
zygomatic arches
zygoma & temporal bones
nasal septum
vomer & perpendicular plate of ethmoid
prominence of the cheeks
maxillary bones & zygomatic bones
what make up the paranasal sinuses?
maxillary
frontal
ethmoid
sphenoid
paranasal sinuses
air-containing cavities that communicate with the nasal cavity
maxillary sinuses
largest
one in each maxilla bone
frontal sinuses
located in frontal bone
ethmoid sinuses
located within the right and left labyrinths of ethmoid bone
sphenoid sinuses
located below sella turcica
located posterior to ethmoid sinuses
always & never for sinuses:
always do sinuses upright
never angle the tube for sinuses
