focusNode
Didn't know it?
click below
Knew it?
click below
Embed Code - If you would like this activity on your web page, copy the script below and paste it into
your web page.
Normal Size Small Size show me how
Final Exam Review from Class
| What bones make up the cranial floor? | Left & Right Temporal, Sphenoid, & Ethmoid bone |
| Which projection(s) is best for demonstrating medial and lateral displacement of the mandibular rami? | PA & PA Axial (Mandibular Rami) |
| The Central Ray will pass through the level of the EAM on which projection of the skull? | AP Axial (Townes) |
| The fibrous joints of the face and skull are called ____________. | Sutures |
| Which projection will best demonstrate the floor of the orbits? | Modified Parietoacanthial (Modified Waters) |
| Where is the Coronal Suture located? | Between the Frontal and both parietal bones |
| What line is perpendicular to the IR for the AP Axial projection of the Zygomatic Arch? | OML |
| What line is parallel and which line is perpendicular to the IR for the lateral projection of the skull? | IOML is Perpendicular to the front edge of the IR; Interpupillary line Perpendicular to the plane of the IR |
| Which bone is of primary interest in a Blowout Fracture? | Maxillary |
| What structure should be projected below the Maxillary sinus for a Waters Projection? | Petrous Ridge |
| The Central Ray is perpendicular to what line for the SMV projection of the Zygomatic Arches? | IOML |
| What suture is located between the Occipital and Parietal bones? | Lambdoidal |
| If performing a Reverse Waters on a patient unable to hyperextend the neck, the Central Ray should be parallel to what line? | MML |
| What is the junction between the Occipital bone, Parietal bone, and Mastoid process? | Asterion |
| What is the Central Ray angle for the AP Axial projection of the TemporalMandibular Articulation (TMJ)? | 35 degrees Caudad (enters 3" above nasion) |
| The Law (or modified Law method) for the TMJ is what kind of projection? | Axiolateral Oblique Projection |
| What is the Central Ray angle and entrance point for the Law method of the TMJ? | 15º Caudad Entering 1½" Superior to the upside EAM |
| How is the head positioned for the Law Method of the TMJ? | AML Horizontal and parallel to the transverse axis of the IR; MSP of the head rotated 15 degrees toward the IR |
| What line should be perpendicular to the plane of the IR for the Waters method? | MML |
| What are the bones of the Calvaria? | Frontal, Left & Right Parietal, Occipital |
| What suture is located between the Parietal and Temporal Bones? | Squamosal |
| If the patient cannot be placed in the upright position for the paranasal sinuses, what is the next best position? | Dorsal Decubitus for the lateral sinuses (since lateral will demonstrate all 4 sinus groups) |
| What is the central ray angle for the Caldwell projection of the skull? | 15° Caudad to exit the nasion |
| For the Townes method projection of the skull, is the IOML is perpendicular to the IR what is the central ray angle? | 37° Caudad (entering 2.5" above the glabella) |
| The Haas Method is a ___________ projection of the skull with a CR angle of _________ entering where? | PA Axial; 25° Cephalad; Enters 1.5" below External Occipital Protuberance and exits 1.5" above nasion |
| How many facial bones are there? | 14 |
| What is the Central Ray angle for the PA Axial projection of the Mandibular Rami? | 20-25° Cephalad to exit the Acanthion |
| What is the Central Ray angle for the Reverse Waters Projection? | Perpendicular (0°) or Parallel to the MML |
| What line should be parallel to the IR for the SMV projection of the Zygomatic Arches? | IOML |
| Where does the Central Ray enter for the SMV projection of the Skull? | Along the MSP at a level 3/4" anterior to the EAM |
| For the Caldwell projection of the skull, what line should be perpendicular to the IR? | OML |
| How is the Central Ray positioned for a Tangential Projection of the Zygomatic Arches? | Perpendicular to the IOML & centered to the zygomatic arch at a point 1" posterior to the outer canthus. |
| For the SMV projection of the Cranial Base, the Central Ray is perpendicular to what line? | IOML |
| How many bones in the cranial group? | 8 |
| If the IOML is parallel to the IR what is the Central Ray angle for the SMV projection? | Perpendicular or 0° |
| Where does the Central Ray exit for the Waters projection? | Acanthion |
| For the Axiolateral Oblique projection for the mandible, how is the head positioned to demonstrate the body of the mandible? | 30° toward the IR |
| For the Axiolateral Oblique projection for the mandible, how is the head positioned to demonstrate the ramus? | True lateral |
| For the Axiolateral Oblique projection for the mandible, how is the head positioned to demonstrate the symphysis? | Rotated 45 degrees toward the IR |
| The Tangential projection for the Zygomatic Arch the Central Ray is perpendicular to what and enters where? | Perpendicular to the IOML; Enters 1" Posterior to the outer canthus on the side being examined |
| The Sagittal suture is between what? | Both parietal bones |
| For the SMV projection for the Zygomatic Arches the Central Ray enters where? | ⊥ to IOML, & entering MSP of the throat at a level 1" Posterior to the outer Canthus |
| For a PA projection of the skull, where does the Central Ray enter? | ⊥ to exit the Nasion |
| How many bones in the skull? And how many in each group? | 22; 8 Cranial & 14 Facial |
| For the Townes projection of the Cranium, if the OML is not ⊥ to the IR what line should be ⊥ to the IR? | IOML |
| What bone is of interest for a Tripod Fracture? | Zygoma |
| The Lambda is the junction of what? | The Lambda and Sagittal sutures (where both parietal bones and the Occipital bone meet) |
| For a lateral projection of the facial bones, the Central ray enters where? | Along the lateral surface of the Zygomatic bone midway between the Outer Canthus and the EAM |
| For the PA Axial projection of the Skull, the Central Ray will exit where? | The Nasion |
| For both the PA and PA Axial (Caldwell) projection of the skull, what should be touching the IR? | Forehead and Nose |
| For the SMV projection of the Cranial Base, what line should be parallel to the IR? | IOML |
| What is the respiration phase for all projections of the Facial Bones and Paranasal Sinuses? | Suspended |
| The Schuller method for the TMJ is a ______________________ projection. | Axiolateral |
| How is the MSP of the head positioned for the Schuller method projection of the TMJ articulation? | MSP Parallel with the plane of the IR (Interpupillary line ⊥ to IR) |
| For the Tangential Projection of the Zygomatic Arch, how is the head tilted and which way? | MSP rotated 15 degrees & Head tilted 15 degrees toward the side of interest |
| The Haas method is a _______________ projection of the cranium. | PA Axial |
| What is the Central Ray angle and entrance for the Haas method? | 25 Degrees Cephalad; Enters 1.5" below External Occipital protuberance and exits 1.5" above Nasion |
| How is the MSP positioned for the SMV projection? | Perpendicular to the IR |
| What is the Central Ray angle for the AP Axial projection of the Zygomatic Arches? | 30 Degrees Caudad entering 1" above the nasion |
| What line should be perpendicular to the IR for the Townes projection? | OML & MSP |
| What is the Central Ray angle for the Axiolateral Oblique projection for the Mandible? | 25 Degrees Cephalad |
| How is the Central Ray and IR positioned for the lateral projection of the skull? | Centered 2" above the EAM |
| For the lateral projection of the Skull, what line is perpendicular to the plane of the IR? | Interpupillary Line |
| What line should be perpendicular to the IR for the AP Axial projection of the TMJ articulation? | OML & MSP |
| What line should be perpendicular to the front edge of the IR for a lateral projection of the Skull? | IOML |
| Which projections will demonstrate BOTH Zygomatic Arches? | SMV and AP Axial |
| Where will the Petrous Ridges appear on a Waters projections for the Sinuses? | Immediately below the Maxillary Sinuses |
Which of the following is centered to the IR for the PA projection of the mandibular Rami?
Chapter 21- Test Prep from Class.
What is the CR orientation for the PA axial projection of the mandibular body?
What CR angulation is required for the PA mandible projection? CR 20-25 cephalic for the PA axial mandible.
What is the proper central ray angle for an Axiolateral projection of the mandible?
Final Exam Review from Class.
How is the head positioned to demonstrate the Ramus of the mandible?
The axiolateral oblique projection is used to demonstrate the mandible. How is the head positioned to demonstrate the ramus of the mandible? The axiolateral oblique projection is used to demonstrate the mandible.