skull

how many bones make up the cranium?

8 bones

how many bones make up the facial bones?

14 bones

how many bones articulate with parietal?

5 bones

how many bones articulate with occiptal

6 bones

The glabella is located on the _______ cranial bone

frontal

the widest portion of the skull is located

parietal tubercles

which cranial bone houses the organs for hearing and equilibrium?

temporal

which aspect of the skull is the most vulnerable to fracture?

squamous portion of temporal

what are the cranial sutures?

coronal, Lambdoidal, sagittal, squamous

what are the junction points?

Asterion, Bregma, Lambda, Pterion

what are the fontanels?

anterior, posterior, mastoid, sphenoid

The jugular foramen are located on the _____ bone.

Sphenoid

Which cranial bone makes up an aspect of the bony nasal septum?

Ethmoid

Sutural or Wormian bones are most often found

Within the lambdoidal suture

what is the most common shape of skull?

Mesocephalic skull

what are the 5 most common mistakes?

rotation, tilt, excessive flexion, excessive extension, incorrect CR angle

what is the angle for Townes?

30 OML and 37 IOML

where is the centering point for Townes?

2 ½ inches superior to glabella

what is the line direction for a lateral?

MSP and parallel

in a right lateral is it parallel or perpendicular to the interpupillary?

perpendicular

where is the centering point for the right lateral?

2 inches superior to EAM

what is the angle for a PA caldwell?

15 degrees

what is the centering point for PA caldwell?

exit of nasion

what is the centering point for PA no angle

exit of glabella

what does the caldwell see?

Petrous ridges over lower ⅓ of orbits

what does the Petrous ridges look like in a no angle PA?

Petrous ridges over supraorbital margin

what is a good centering points for an AP trauma?

glabella

where are the Petrous ridges in an AP trauma?

Petrous ridges superimpose superior orbital regions

what line are you making sure is perpendicular to the IR for SMV?

IOML

where is the CR for SMV?

1½ in (4 cm) inferior to mandibular symphysis

There is a ___ difference between the orbitomeatal and infraorbitomeatal lines.

7° to 8°

Which projection of the skull will best demonstrate signs of a pituitary adenoma?

lateral

How much CR angle is required for the AP axial projection of the skull if the IOML is perpendicular to the IR?

37°

Which positioning error is present if the orbital plates are not superimposed on a lateral skull
radiograph?

Tilt

Which variation of the PA (axial) projection of the skull has been performed if the petrous ridges are at the level of the supraorbital margin?

PA 0°

what are you looking for in a AP axial towne?

occipital bones

what are you looking for in a lateral?

parietal downside

what are you looking for in a PA 15?

frontal bone

what are you looking for in a SMV?

base of the skull

the submentovertex projection requires that the _______ is places parallel to the image receptor.

IOML

what are we looking for in a PA 0?

petrous pyramids

what line is used in a PA 0?

OML

why would we do a lateral table skull?

blood in sinuses

rotation on a lateral skull radiograph would appear as

mandibles

on a lateral skull cray, erosion of what particular anatomy would indicate a tumor?

sella tuncica

what type of tumor would be there at the sella tunicica?

pituitary

what bones are we looking for in a PA caldwell?

frontal

where are the petrous pyramids in a caldwell?

lower 1/3

a PA caldwell is good to what orbital?

superior

what positioning line is used for caldwell?

OML

For a PA skull why would we angle the CR 30° caudal?

Push pyramids down

what line do you aim for an trauma ap 0?

OML

where do you center for a trauma ap 0?

glabella

what aspect of the temporal bone is considered the densest?

petrous ridges