Week 1 - 65 powerpoint random questions Flashcards
The glabella is located on the _______ cranial bone.
a. Parietal
b. Frontal
c. Occipital
d. Sphenoid
b. frontal
The widest portion of the entire skull is located between the:
a. Glabella and bregma
b. Bregma and lambda
c. Parietal tubercles
d. Greater wings of the sphenoid
c. parietal tubercles
Which cranial bone houses the organs for hearing and equilibrium?
Ethmoid
Sphenoid
Temporal
Occipital
temporal
The jugular foramen are located on the _____ bone.
Occipital
Sphenoid
Temporal
Ethmoid
temporal
Which cranial bone makes up an aspect of the bony nasal septum?
Sphenoid
Temporal
Ethmoid
Frontal
ethmoid
Sutural or Wormian bones are most often found:
Within the lateral masses of ethmoid bone
Within the inner and outer tables of the frontal bone
Within the petrous bone of the temporal bone
Within the lambdoidal suture
within the lambdoidal suture
Which division of the ear contains the malleus?
Internal
Middle
External
Aditus
middle
The opening between the epitympanic recess and the mastoid portion of the temporal bone is called the:
Attic
Antrum
Eustachian tube
Aditus
aditus
Which aspect of the skull is most vulnerable to fracture?
Squamous portion of temporal bone
Petrous portion of temporal bone
Orbital plate of frontal bone
Squamous portion of occipital bone
squamous portion of occipital bone
Which landmark(s) corresponds with the level of the petrous ridge?
Top of the ear attachment (TEA)
How many fontanels in an infant?
6
The pituitary gland (hypophysis cerebri) is associated with and protected by the ________ bone.
sella turcica/ sphenoid
Which cranial bone contains the cribriform plate?
ethmoid
Which of the following sutures separates the parietal from the occipital bone?
lambdoidal suture
Which term describes the small irregular bones occasionally found in the sutures?
wormian
The ethmoid notch is part of which cranial bone?
ethmoid bone
Which bones are part of the floor of the cranium?
Frontal, ethmoid, sphenoid, temporal, and occipital
The mastoid air cells communicate with ___________
the middle ear
Where are the sensory apparatus of both equilibrium and hearing contained?
Internal ear
Which cranial bone possesses the superior nasal conchae?
ethmoid bone
Which cranial bone possesses the zygomatic process?
temporal bone
Which three cranial bones articulate directly with the zygomatic bone?
Frontal, temporal, and sphenoid
Which bones of the skull articulate with 5 cranial bones?
sphenoid bone
How many skull bones are present in the human body?
22
How is rotation evident on a lateral projection of the skull?
When bone structures appear anterior or posterior
Where is the CR centered for a lateral projection of the cranium?
2 inches superior EAM
What is the difference, in degrees, between the infraorbitomeatal and orbitomeatal lines?
7 degrees
Which technical considerations is most critical for demonstrating air and/or fluid levels within the cranium?
Horizontal x-ray beam
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 radiograph of a lateral cranium reveals that the mentum was cut off from the bottom of the radiograph. A 24 × 30-cm (10 × 12-inch) IR was used, and it was placed crosswise. What must be altered if a repeat exposure is performed?
IR must be placed lengthwise
A patient comes to radiology for a routine study of the cranium. He is unable to flex his head and neck sufficiently to place the OML perpendicular to the IR for the AP axial projection. What should the technologist do to compensate for this problem without creating excessive magnification of the occipital bone?
Alignment must change from OML to IOML and EAM (IOML perpendicular to IR), while using a tube angle of 37 degrees caudal
A patient comes to radiology with a possible bone cyst within the squamous portion of the frontal bone. Which projection(s) would best demonstrate this region with a minimal amount of distortion of the frontal bone?
PA axial with a tube angle of 15 degrees caudal
The submentovertex projection requires that the inferior OML (IOML) is placed ______to the image receptor
parallel
What projection of the skull requires the sagittal plane to be parallel to the image receptor (IR) and the interpupillary line to be perpendicular to the IR?
lateral view
A radiograph of a posteroanterior (PA) axial projection (Caldwell method) of the cranium reveals that the petrous ridges are located at the level of the lower one third of the orbits. The technologist performed this projection with the CR angled 15° caudal to the orbitomeatal line (OML). How must positioning be altered if a repeat exposure is performed?
Nothing, the position is correct
Which cranial projection(s) will best demonstrate a possible basilar fracture?
Horizontal beam lateral
Which positioning line should be perpendicular to the plane of the IR for the AP axial (Towne) projection with a 37° caudad CR angle?
IOML and EAM
How much difference is there between the OML and IOML positioning lines?
7 degrees
What projection of the skull requires the central ray (CR) to be centered to exit at the glabella?
PA skull
How many skull bones are present in the human body?
22
Which positioning error most often results in a repeat exposure of a cranial position?
rotation
