Study RAP 2 Lesson 9.5 Flash Cards

 
Pile Management Card
RAP 2 Lesson 9.5

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what projects anteriorly from the squama of the temporal bone and articulates with the zygomatic bone of the face to form the zygomatic arch
zygomatic process
what view of the skull will you evaluate the symmetric petrous pyramids, dorsum sellae & posterior clinoid process visible within the foramen magnum
AP townes method of the skull
what position shows the structures of the petrous ridges projected immediately below the inferior border of the orbits
modified waters method
in what projection of the orbits will you evaluate the petrous ridges are projected immediately below the inferior border of the orbits
modified waters method
in what projection of the skull will you evaluate the entire cranium without rotation or tilt, superimposed rami, roofs, and mastoid regions
lateral skull
in what projection of the skull will you evaluate the semetric petrous ridges and entire cranial cortex
pa skull
what structures are shown with the AP Axial projection of the skull (Townes Method)
symmetrical image of the petrous pyramids
posterior portion of the foramen magnum, dorsum sellae and posterior clinoid processes projecting within the foramen magnum
what structures are shown for a Lateral Skull
superimposed halves of the cranium in the lateral projection
the sella turcica, anterior and posterior clinoid processes and dorsum sellae
what structures are shown for a PA Skull
orbits are filled by the shadows of the petrous pyramids
posterior ethmoidal air cells, crista galli, frontal bone, and the frontal sinuses
what type of skull is long from front to back and narrow from side to side
dolichocephalic skull
what type is the name for the skull that is shorter from front to back and broad from side to side
brachycephalic skull
what are the six localization points used in radiography
OML
IOML
AML
MML
GML
GAL
what is a normal or typical skull called
mesocephalic skull
what is conical or pyramidal in shape and is the thickest, densest cranial bone
petrous portion ( pars petrosa, petrous pyramid)
what is the first large air cell that communicates with the tympanic cavity
mastoid antrum
what varies in size, is larger in males than females and presents the mastoid antrum
mastoid portion
what forms the inferior, posterior part of the temporal bone and is made up of the mastoid and petrous portions
petromastoid portion
what is the slender, pointed bone of variable length that projects down and forward from the undersurface of the tympanic portion of the temporal bone
styloid process
what is the thin upper portion of the temporal bone called that forms the side wall of the cranium and helps form the EAM
squamous portion
what bones of the skull are irregular in shape and are situated at the sides and base of the skull
temporal bones
how many bones does the occipital bone articulate with
6
what part of the occipital bone curves anteriorly and superiorly to its junction with the sphenoid
basilar portion
what is the saucer shaped bone of the occipital bone that presents a prominent process termed the external occipital protuberance (Inion)
squama
what projects anteriorly from each side of the squama curving medially to complete the foramen magnum
lateral condylar portions
what is the large aperature that houses nerve fibers that pass from the brain to the spinal cord
foramen magnum
which bone of the cranium forms the floor and posterior wall of the cranial cavity
occipital bone
how many bones articulate with the sphenoid bone
12
what arise from the lateral portions of the body of the sphenoid and medial portions of the grreater wings that project inferiorly and curve laterally
pterygoid processes
what arises from the body of the sphenoid, one on each side, in an anterior and superior direction
lesser wings of the sphenoid bone
what contains the foramen rotundum, ovale and spinosum
the greater wings of the spenoid bones
what are two processes that extend upward and laterally from the body of the sphenoid bone
greater wings
what houses the pituitary gland
sella turcica
what forms the posterior wall of the nasal cavity
body of the sphenoid bone
what bone resembles the shape of the outstretched wings of a bat
sphenoid bone
what is the irregulary wedge shaped bone that helps form the base of the cranium, sides of the skull, and the floors and sides of the orbits
sphenoid bone
how many bones articulate with the parietal bones
5
what is located near the central portion of the external surface of the parietal bone
parietal eminence
what shape is the external surface of the parietal bone
convex
what do the two parietal bones form
the bulging sides of the cranium
the posterior roof of the cranium
what bones are shaped like a curved plate with four borders
parietal bones
how many parietal bones are there
2
how many bones articulate with the ethmoid bone
13
what part of the ethmoid bone contains ethmoid air cells and are divided into 3 groups
labyrinth (lateral masses)
what is the thin, flat bone extending inferiorly from the cribiform plate and forms part of the nasal septum
vertical perpendicular plate
what is recieved into the ethmoidal notch of the frontal bone, perforated by many foramena, and superiorly projects the crista galli into the anterior cranial fossa
horizontal cribiform plate
what is the small cube shaped bone situated between the orbits that helps to form the anterior cranial fossa, nasal, orbital wall, and nasal septum
ethmoid bone
how many bones do the frontal bones articulate with
12
what recieves the cribiform plate of the ethmoid bone at the location of the nasal spine
ethmoidal notch
what forms the roof of the orbit and is separated by the ethmoidal notch
orbital horizontal plate
what transmits nerves and blood vessels to the eyes
supraorbital foramen
what is inferior to the superciliary arches forming the superior and lateral boundaries of the orbits protecting the eyes
supraorbital margins
what is the smooth elevations between the superciliary arches called
glabella
what are inferior to the frontal eminences, superior to the supra orbital margins. corresponds to the position of the eyebrows
superciliary arches
what sinuses are contained in the squama
frontal air sinuses
what forms the forehead and anterior portion of the cranial vault
squama
what develops as two bones separated by the metopic suture
frontal bone
when is ossification completed for the frontal and castoid fontanels
2 years
when is ossification completed for the lambda and sphenoid fontanels
3 months
what is located at the site of the asterion
mastoid fontanel
what is located at the site of the pterion
sphenoid fontanel
what is another name for the posterior lateral fontanel
mastoid fontanel
what is the fontanel that is located at the posterior inferior angles of the parietal bones
posterior lateral fontanels
what is another name for antero lateral fontanel
sphenoid fontanel
what is the fontanel that is located at the anterior inferior angles of the parietal bones
antero lateral fontanel
what is the union of the sagittal and lambdoidal sutures called
lambda or occipital fontanel
what fontanel is located at the junction of the two parietal bones and the occipital bone
posterior fontanel
what are the other names for the anterior fontanel
brigma or frontal fontanel
what fontanel is located at the junction of the two parietal bones and the frontal bones
anterior fontanel
how many fontanels are there
6
what are the areas of incomplete ossification in newborn cranial bones called
fontanels
what is the suture that is between the parietals and the occipital bone
lamboidal suture
what is the suture that is between the temporal and the parietal bones
squamosal suture
what is the suture that is midline between the parietals and the occipital bone
sagittal suture
what is the suture that transverses the skull between the frontal and parietal bones
coronal suture
what are the names of the sutures of the skull
coronal
sagittal
squamosal
lamboidal
what are rigid imovable articulations of the cranium called
sutures
what are the two outer layers of bone of the cranium called
compact bone
what is the inner layer of spongy bone of the cranium called
diploe
how many layers of bone is the cranium composed of
3
what are the two bone classifications found in the skull
flat & irregular bones
what are the three bones located in each ear of the cranium
ossicles
what houses and protects the brain
cranium
how many bones is the face composed of
14
what is the base of the cranium called
base
what is the upper walls of the cranial cavity
vault
the cranium is composed of how many bones
8
the skull is composed of how many bones
22
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