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SKULL-

Skull

Question	Answer
How many bones make up the cranium?	8
How many bones make up the skull?	22
What is the purpose for the cranial bones?	Protect the Brain
What are the fibrous joints in the skull called?	Sutures
Which suture is found between the frontal bone and parietal bone?	Coronal
Which suture is found in between the 2 parietal bones?	Sagittal
Which suture is found in between the temporal bone and the parietal bone?	Squamosal
Which suture is found in between the occipital bone and the parietal bone?	Lambdoidal
Which bones in the skull contain air sinuses?	Frontal, Ethmoid, Temporal, Maxilla, Sphenoid
Which bone in the skull has condyles that articulate with the Atlas of the Cervical spine?	Occipital
Which bone in the skull are the zygomatic arches part of?	Temporal
What are the incomplete ossifications of the skull named?	Fontanels
Which bone in the skull contains the auditory organ and the organs of hearing?	Temporal
Which canal allows for the transmission of the optic nerve and the ophthalmic artery?	Optic canal
The vestibulocochlear organ is the organ of what?	Balance and hearing
The petromastoid portion is part of what skull bone?	Temporal bone
The petrous portion(pyramids) is part of which bone in the skull?	Temporal
The tempanic membrane, the auditory tube, the auditory ossicles(malleus, incus, stapes) are part of what portion of the ear?	Middle
This bone situated just below the tongue is?	Hyoid Bone
The cochlea, the round window, the semicircular canals are all part of which portion of the ear?	Inner
The Glabella is part of what bone in the skull?	Frontal bone
The acanthion is part of what bone in the skull?	Maxilla
Which skull type is considered Average?	Mesocephalic
Which of the skull types is narrow from side to side and long from front to back?	Dolichocephalic
Which skull type is broad from side to side and short from front to back?	Brachycephalic
In a typically shaped head, the Petrous pyramids project anteriorly and medially at what angle?	47 degrees
The Nasion is part of what bone of the skull?	Frontal bone
What is the densest bone in the skull named?	Petrous Portion(Pyramid)
The sella turcica is U shaped and contains what gland?	Pituitary
Where is the CR placed for a lateral view of the skull?	2 in superior to the EAM
Which plane is Parallel to the IR for a lateral projection of the skull?	MSP
What parts of the skull should be superimposed on the lateral projection?	The orbital roofs, greater wings of the sphenoid, mastoid regions, EAM's and TMJ's
When doing an AP Caldwell projection, the CR will be directed in what way, and at what degree of angle?	Cephalad, 15 degree angle
What line is preferred to be perpendicular to the IR for the Townes projection?	OML
What is the secondary line to be used for the Townes projection if the patient can not flex their neck enough?	IOML
What is the degree of angle for the Townes method if the OML is used?	30 degrees
What is the degree of angle for the Townes method if the IOML is used?	37 degrees
Where is the CR directed on a Townes projection?	2 1/2 inches above the Glabella and pass through the EAM
What structures are visible within the Foramen Magnum on a Townes projection?	The Dorsum Sellae and the Posterior Clinoid Processes
What projection will demonstrate the optic canal?	Rhese Method
Which line is perpendicular to the IR when doing a Rhese view of the orbits?	AML
In a Rhese view, the MSP forms a ______ degree angle to the plane of the IR.	53
What 3 parts are touching the IR on a Rhese view? Also known as a 3 point landing!	The nose, the cheek, and the chin
Where is the CR directed for the Rhese view?	Perpendicular, and 1 in superior and 1 in posterior to the TEA
What bones are part of the Calvaria?	Frontal, Occipital, Parietal
What bones form the Floor of the skull?	Ethmoid, Sphenoid, Temporal
What are the names of the Foramina that are contained within the Sphenoid bone?	Foramen Ovale, Spinosum, Rotundum, and Optic
The deep depression that is U-Shaped in the Sphenoid bone is called?	Sella Turcica
When positioning for a Caldwell projection, what parts of the patients face will touch the IR?	Nose and Forehead
Which projection are used to visualize the Petromastoid Portion(Mastoids)?	Modified Law, Stenvers, and Arcelin
The posterior portion of the skull that forms the base of the skull is named?	Occipital bone
What exits the Foramen Magnum?	The Medulla Oblongata and Spinal Cord
At the base of the Temporal bone, there is an opening that allows the Internal Carotid Artery to pass through. What is this foramen called?	Foramen Lacerum
When doing a PA Caldwell projection, The CR will be directed where, and at what angle?	CR Exits the Nasion at a 15 degree angle Caudad
What line is Perpendicular to the IR on the PA Caldwell?	OML
When doing a PA Skull, where is the CR directed and at what angle?	CR directed to exit the Nasion and no angle
When looking at a Rhese projection image, the optic foramen will be where on the image?	In the lower lateral 1/3 corner of the orbit
Which orbit is being visualized when doing the Rhese projection?	The one closest to the film
The Zygomatic process is part of what bone?	Temporal bone
How many facial bones are there?	14
What is the name of the junction between the Lambdoidal and Sagittal sutures?	Lambda
What is the name of the junction between the Coronal and Sagittal sutures?	Bregma

Created by: radgirl37

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