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Chapter 11
practice questions
| Question | Answer |
|---|---|
| Which term describes the small flap of cartilage covering the opening of the ear? | tragus |
| The glabella is located on the _______ cranial bone. | frontal |
| The ethmoid notch is part of which cranial bone? | frontal |
| Which of the following cranial bones does not articulate with the parietal bone? | -occipital -frontal -sphenoid All of the above. |
| What is the difference, in degrees, between the infraorbitomeatal line and orbitomeatal lines? | 7 to 8 degrees |
| Which aspect of the skull is most vulnerable to fracture? | squamous portion of temporal bone |
| Which of the following landmarks corresponds with the level of the petrous ridge? | top of the ear attachment (TEA) |
| Which cranial bone houses the organs for hearing and equilibrium? | temporal |
| Which of the following bones is part of the floor of the cranium? | temporal |
| An average-shaped skull with a 47 degree angle between the petrous pyramids and the midsagittal planeis classified as: | mesocephalic |
| A radiograph of a lateral projection of the cranium reveals that the orbital roofs (plates) are not superimposed- one is slightly superior to the other. which of the following positioning errors led to this radiographic outcome? | tilt |
| A ped patient enters radiology for paranasal sinus series. Bc of age, she is unable to hold still for the projection even with the use of immoblization devices. Who holds the child down? | parent |
| What is the only paranasal sinus not contained within a cranial bone? | maxillary |
| What projection of the skull requires the CR to be centered to exit at the glabella. | Posteroanterior (PA) |
| Which sinus is projected through the oral cavity with a parietocanthial transoral projection? | sphenoid |
| Sutural or wormian bones are most often found: | within the lambdoidal suture |
| Which one of the following positioning errors most often results in a repeat exposure of a cranial position? | rotation |
| Where is the CR centered for a lateral projection of the cranium? | 2 inches superior to the EAM |
| The widest portion of the entire skull is located between the: | parietal tubercles |
| Which aspect of the skull is most vulnerable to fracture? | squamous portion of temporal bone |
| The jugular foramen is located on the ________ bone. | temporal |
| Which cranial bone makes up an aspect of the bony nasal septum? | ethmoid |
| The opening between the empitympanic recess and the mastoid portion of the temporal bone is called the: | Aditus |
| The angle between the midsagittal plane and the long axis of the petrous portion of the temporal bone in the brachycephalic skull is: | 47 degree or greater |
| The midline point at the junction of the upper lip and the nasal septum is called: | Acanthion |
| The tragus is located on the: | external ear |
| There is a _______ difference between the orbitomeatal and infraorbitomeatal lines. | 7 to 8 degrees |
| How much CR angle is required for the AP axial projection of the skull if the IOML is perpendicular to the IR? | 37 degrees |
| Which positioning error is present if the orbital plates are not superimposed on a lateral skull radiograph? | rotation |
| What type of CR angle is required for a PA axial (Haas method) projection of the skull? | 25 degrees cephalad |
| Which of the following factors is different between a lateral projection of the sella turcica and the cranium? | CR centering |
| What is the positioning error for a parietocanthial projection if the petrous ridges are within the maxillary sinuses? | excessive flexion |
| the posterior aspect of the orbit is termed: | the apex |
| A patient comes in for a sinus series. She cannot fully extend her head and neck for the submentovertex projection. What else can the technologist do to produce a diagnostic SMV projection? | angle the CR to place it perpendicular to the IOML |
| T or F: the submentovertex projection requires that the inferior OML (IOML) is placed parallel to the IR. | true |
| A radiograph of a lateral cranium reveals that the mentum was cut off from the bottom of the radiograph. A 10x12 in IR was used and was placed crosswised. What must be altered for repeated exposure? | None of the above, all structures are demonstrated. |
| Which one of the following structures is part of the middle ear? | Tympanic cavity |
| The point of union between both halves of the mandible is termed: | symphysis menti |
| Which one of the folllowing technical considerations is most critical for demonstrating air and/or fluid levels within the cranium? | horizontal xray beam |
| Where is the CR centered for a lateral projection of the sinuses? | midway between the outer canthus and the EAM |
| Infant Fontanel: Anterior Fontanel | Adult: Bregma |
| Infant Fontanel: Posterior Fontanel | Adult: Lambda |
| Infant Fontanel: right sphenoid fontanel | Adult: right pterion |
| Infant Fontanel: left sphenoid fontanel | Adult: left pterion |
| Infant Fontanel: right mastoid fontanel | Adult: right asterion |
| Infant Fontanel: left mastoid fontanel | Adult: left asterion |
| Average shaped skull | Mesocephalic |
| short,broad skull | brachycephalic |
| long,narrow head | dolichocephalic |
| the ridge or arch of bone that extends across the forehead directly above each eye | superciliary ridge (arch) |
| slight groove or depression above eyebrows | supraorbital groove (SOG) |
| smooth, slightly raised triangular area between and slightly superior to the eyebrows and above the bridge of the nose. | glabella |
| located at the junction of the two nasal bones and the frontal bone. | nasion |
| (“little thorn”) is the midline point at the junction of the upper lip and the nasal septum. This is the point where the nose and the upper lip meet. | acanthion |
| the lower posterior angle on each side of the jaw or mandible. | angle or gonion |
| A flat triangular area projects forward | chin or mentum |
| The midpoint of this triangular area of the chin as it appears from the front is termed the | mental point |
| The junctions of the upper and lower eyelids are termed | canthi |
| where the eyelids meet near the nose | inner canthus |
| the more lateral junction of the eyelids is termed the | outer canthus |
| The superior rim of the bony orbit of the eye is the | SOM |
| the portion of the lateral rim that is near the outer canthus of the eye. | midlateral orbital margin |
Created by:
briannagranados