Skull Flashcards
Which bones are part of the cranium
Maxillary
The bony prominence on the frontal bone between the eyebrows is called
Glabella
Which of the following is the positioning landmark located at the junction of the nose and upper lip
Acanthion
Which bones contain paranasal sinuses
Frontal bone, ethmoid bone, maxilla
When a PA projection of the skull is performed the centeral ray is directed
Perpendicular to the ir
A projection of the skull in which the sagital plane is parallel to the ir and the Interpupillary line is perpendicular to the ir is a
Lateral projection
When the patient is supine the sagittal plane of the skull is perpendicular to the ir the MML is perpendicular exiting through the acanthion the resulting radiography will demonstrate the
maxillary sinuses
When the patient is supine, the sagital plane of the skull is perpendicular to the ir and the central ray is angled 30 degree caudad the resulting radiograph will demonstrate
Posterior parietal bones and occipital bone
When patient is prone the sagittal plane of the skull is perpendicular to the ir the orbitomeatal line is perpendicular to the IR and the central ray is angled 25 degree caudad the resulting. Radiograph will demonstrate the
Frontal bones
When the right and left halves of the skull do not appear symmetric on a PA or an AP projection this is a sign that
The sagittal plane is not perpendicular to the IR
A blowout fracture involves
Floor of the orbit
The projection that will demonstrate all of the paranasal sinuses
Lateral projection
Bones that make up the cranium
Frontal occipital right, right and left parietal , right and left temporal , sphenoid, ethmoid
Which cranial bone contain the auditory canal
Petrous potion
Bones that make up the orbit
Frontal bone , ethmoid bone, lacrimal bone, maxilla, zygoma
Bones that contain the paranasal sinuses
Maxilla,ethmoid bone, sphenoid bone,and the frontal bone
Name a projection that demonstrate the cranial base
Submentovertical projection
Name 2 projection that demonstrate the maxillary sinus
Waters and lateral projection
Describe the skull positioning landmark called glabella
The bony prominence on the frontal bone between the eyebrows
Describe the skull positioning landmark the nasion
The anterior depression in the midline of the skull between the orbit
Describe the skull positioning called the acanthion
The point located at the junction of the nose and the upper lip that correspond to the nasal spine . The prominence in the center of the lower margin of the anterior mandibular body
Describe the skull positioning landmark called the mental point
The prominence in the center of the lower margin of anterior mandibular body
The skull positioning landmark called gonion
The right angle formed by the contour of the inferior posterior ramus also called angle of manidible
Describe the positioning detail for PA axial projection of the skull
Sagittal plane of the skull is perpendicular to the center of the IR with forehead and nose resting on the table or against upright Bucky . Beck flexión is adjusted to place OML perpendicular to ir
Describe the center ray placement for the PA axial projection of the skull
Angled 15 degrees caudad to center of IR through nasion
Describe the positioning of the AP axial projection of the skull
Sagittal plane of the skull is perpendicular to IR with back of head resting in table or against upright Bucky. Neck flexión is adjusted to place OML perpendicular to IR
