Skull & Sinus
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| How many bones make up the cranium? | show 🗑
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| The cranial bones are ridgedly jointed together by articulations called? | show 🗑
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| Which skull suture is found between the frontal and parietal bones? | show 🗑
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| show | glabella
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| show | temporal bone
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| Which bone in the skull contains the auditory organs and the organs of hearing? | show 🗑
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| The largest and most dense bone in the face is the ____. | show 🗑
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| Which skull type is considered NARROW from side to side? | show 🗑
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| show | tympanic membrane
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| What is located in the internal ear? | show 🗑
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| What should be seen superimposed on a lateral projection of the skull? | show 🗑
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| show | Caldwell
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| show | OML
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| show | 15* Cephalad
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| show | IOML
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| If the IOML is placed PERPENDICULAR to the IR during and AP axial (Towne) projection of the skull, how much should the CR be angled? | show 🗑
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| What is clearly demonstrated within the foramen magnum during an AP axial (Towne) projection of the skull? | show 🗑
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| show | 40-60* caudal
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| Which methods will clearly demonstrate the petrous ridges, foramen magnum, dorsum sellae, and posterior clinoid processes? | show 🗑
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| What is the average CR angle for the PA axial (Haas) projection of the skull? | show 🗑
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| show | IOML
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| In what projection are the mastoid processes, spehnoid sinuses, and the carotid canals clearly demonstrated? | show 🗑
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| show | frontal, parietal(2) and occipital
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| show | fontanels
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| show | optic foramen and foramina rotundum
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| The base of the anterior portion of the OCCIPITAL BONE contains 2 large openings that allow blood vessels and nerves to pass through. These 2 openings are called: | show 🗑
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| show | lacrimal bone
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| show | Maxillae and palatine
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| Which parts of the patient's face touch the IR for the PA axial (Caldwell) projection? | show 🗑
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| show | Mayer
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| show | synovial - hinge and gliding
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| show | Sphenoid
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| show | halfway between outer canthus and EAM
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| What is another name for the parietoacanthial projection of the facial bones? | show 🗑
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| show | 37*
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| show | 55*
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| show | MML
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| On which of the following projections will BOTH zygomatic arches be demonstrated? 1.Tangental 2.SMV 3.AP axial | show 🗑
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| Which of the following are true regarding the lateral projection of the nasal bones? 1. occlusal IR may be used 2. both sides are done for comparison 3.the IPL is perpendicular to the tabletop | show 🗑
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| show | 15* towards the examined side
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| show | 15* away from the examined side
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| For the tangential projection of the zygomatic arches, the CR is directed PERP to the _____: | show 🗑
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| What is the CR angulation for the AP axial projection of the zygomatic arches? | show 🗑
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| show | tip of nose
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| show | 25* cephalad
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| show | 15* caudad
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| At what level will the CR be place for the tangential projection of the zygomatic arches? | show 🗑
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| Which projections would demonstrate the ethmoidal sinuses? | show 🗑
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| show | Maxillary
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| show | inferior to the floor of the maxillary sinuses
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| The largest sinus is the ___ | show 🗑
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| Which sinus is located directly below the sella turcica? | show 🗑
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| show | frontal
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| Which sinus group is located within the lateral masses of labyriths? | show 🗑
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| When performing sinus x-rays the patient must always be in the upright to _______: | show 🗑
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| For a lateral projection of the paranasal sinuses the CR is directed _____: | show 🗑
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| Which projection will best demonstrate the frontal sinuses? | show 🗑
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| Which sinus group is projected through the open mouth on the open-mouth modification of the Waters method? | show 🗑
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| For the open-mouth Waters method, the CR should exit the _____: | show 🗑
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| Which sinus is located in the frontal bone? | show 🗑
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| Which sinus is located just lateral to the nose? | show 🗑
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| Which sinus is located inferior to the frontal sinus? | show 🗑
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| Which of the following should be clearly demonstrated on a LATERAL projection of the paranasal sinuses? 1. all 4 sinus groups 2.superimposed orbital roofs 3.superimposed mandibular rami | show 🗑
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| show | Caldwell only
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| show | Petrous ridges
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| show | 37*
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| What sinus projection would best demonstrate the maxillary sinuses? | show 🗑
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| To successfully demonstrate the ethmoidal and sphenoidal sinuses on the SMV projection, which of the following must occur: 1.patient must be recumbent 2.IOML is parallel to IR 3.CR must be perp to IOML and horizontal | show 🗑
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| At which level should the CR enter the base of he skull for the SMV projection of the sinuses? | show 🗑
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| show | lateral, caldwell and SMV
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| The respiration phase for all projections of the facial bones and sinuses is: | show 🗑
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| show | ethmoid
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| show | acanthion
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| show | below maxillary sinuses
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| The CR angle for a Caldwell projection of the sinuses is ____. | show 🗑
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| Which reference line is positioned horizontal to ensure proper extension of the head during a lateral projection of the sinuses? | show 🗑
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| Which of the following foramina are demonstrated in the orbit on a Waters image? | show 🗑
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| show | 14
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| Which bones has condyles that articulate with the atalas of the C spine? | show 🗑
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| The cranial bone that provides a depression to house the pituitary gland is the ______ bone. | show 🗑
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| show | acanthion
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| Name the three auditory ossicles: | show 🗑
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| show | hearning and balance
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| show | ethmoid, sphenoid and temporal
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| show | facial
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| show | ethmoid, frontal and sphenoid
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| The thickest and densest portion in the cranium in the: | show 🗑
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| show | foramen magnum
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| On which cranial bone is the cribiform plate located? | show 🗑
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| On which cranial bone is the crista galli located? | show 🗑
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| On which cranial bone is the perpendicular plate located? | show 🗑
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| show | sphenoid
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| show | occipital
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| The pterygoid processes project inferiorly from which cranial bone? | show 🗑
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| show | maxilla
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| show | mandible and maxillary
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| show | palatine
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| show | inferior nasal conchae
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| What are the two smallest bones of the skull that are located in the anterior part of the medial walls of orbits between labyrinth of ethmoid and maxilla called? | show 🗑
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| show | maxilla
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| show | Vomer
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| show | Hyoid
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