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40 Cards in this Set
- Front
- Back
Name the paired cranial bones. |
Parietal Temporal |
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Name the unpaired facial bones. |
Mandible Vomer |
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What is the name of the suture separating the frontal bone from the parietal bones? |
Coronal suture |
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Name the three processes of the temporal bone. |
Mastoid Zygomatic Styloid |
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The pituitary gland is seated in which cranial bone? |
Sphenoid |
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What is the name of the prominence on the squamous portion of the frontal bone that may be used as a positioning landmark? |
Glabella |
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Label the atomic structures seen in this illustration. |
1. Temporal bone 2. Bregma (intersection on coronal and sagittal sutures) 3. Glabella 4. Zygoma 5. Anterior nasal spine |
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The parietal bones meet midline to form what suture? |
Sagittal |
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A large opening in the base of the occipital bone through which the spinal cord passes is the _________. |
Foramen magnum |
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The paranasal sinuses lie in which cranial bones? Which is the most posterior paranasal sinus? |
Frontal Ethmoid Maxillae Sphenoid Sphenoid |
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Unossified points at the junction of sutures on an infant's skull are called __________. |
Fontanels |
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What is the name of the point formed at the junction of the parietal bone, temporal bone, and greater wing of the sphenoid bone? |
Pterion |
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What two bones form the nasal septum? |
Ethmoid Vomer |
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What is a suture formed by the temporal and parietal bones? |
Squamousal |
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What bone(s) separate the oral and nasal cavities? |
The 2 maxillae |
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What external landmark corresponds to the nasal frontal suture? |
Nasion |
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What are the names of the processes found on the mandible and maxilla that serve to provide anchors for the roots of the teeth? |
Alveolar processes |
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The process extending superiorly and anteriorly from the ramus of the mandible is the __________. |
Coronoid process |
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What facial bone is quadrilateral in shape and his four processes: frontosphenoidal, orbital, temporal, and maxillary? |
Zygoma |
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What structures are indicated in this image? What position and projection was the image made? |
1. Frontal sinus 2. Maxillary sinus 3. Zygoma Waters position Parietoacathial projection |
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The process extending superiorly and posteriorly from the ramus of the mandible is the __________. |
Condyloid process |
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What degree angle is formed by the petrous ridges and MSP in the mesocephalic shaped skull? |
47° |
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What is the vertical portion of the mandible called? |
Ramus |
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What skull projection is most commonly used to demonstrate the occipital bone? |
AP axial/Towne method |
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The lateral projection of the skull utilizes __________ the baseline. |
IOML |
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When viewing a lateral skull radiograph, incorrect positioning caused by tilt is evidenced by what structures is not being superimposed? |
Supraorbital margins Mandibular body |
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Where should the petrous ridges be projected in the PA axial (Caldwell) projection of the skull using a 15° caudal tube angle? |
The lower 1/3 of the orbits |
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When viewing a lateral skull radiograph, incorrect positioning caused by rotation is evidence by what structure is not being super imposed? |
Mandibular rami EAMs Sella turcica |
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Where should the petrous ridges be projected in the PA projection of the skull with the OML perpendicular to the IR? |
Filling the orbits |
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What projection(s) will demonstrate the dorsum sella and posterior clinoid processes within the foramen magnum? |
AP axial projection (Towne) PA axial projection (Haas) |
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What is the single best projection to demonstrate the facial bones? |
Parietoacanthial projection (Waters) |
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What is the CR for lateral nasal bones? For lateral facial bones? |
1/2" distal to the nasion Mid-zygoma |
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In a correctly position Waters, where should the petrous ridges be seen with respect to the maxillary sinuses? |
Below the sinuses |
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The oblique inferosuperior (tangential) projection of the zygomatic arches requires that the IOML be __________ to the IR, and that the head be rotated __________ degrees toward the __________ side. |
Parallel 15° Affected |
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For the PA axial projection of the mandible, which direction does the tube need to be angled in order to demonstrate condyles and TMJ area? |
Cephalad |
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If the petrous ridges are seen super imposed on the inferior aspect of the maxillary sinuses in the parietoacanthial projection, what change in position is necessary? |
Lift the chin more |
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What projection demonstrates all the paranasal sinuses? |
Lateral |
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The PA projection, utilizing 15° OML adjustment from the horizontal, is used to demonstrate which sinus group(s)? |
Frontal and ethmoid |
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The SMV projection requires that the __________ baseline be parallel to the IR, and demonstrates the __________, __________, and __________ sinuses. |
IOML Sphenoid Ethmoid Maxillary |
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The open mouth Waters demonstrates which sinuses through the open mouth? |
Sphenoid |