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Radiology Sem 3 > Test 1: Skull And Sinuses > Flashcards

Test 1: Skull And Sinuses Flashcards

(61 cards)

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1
Q

Which landmark is between the eyebrows

A

Glabella

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2
Q

What is the top portion of the skull

A

Vertex

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3
Q

The mental point is located where

A

The chin

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4
Q

Which Skull shape is very short from front to back with the Petrous ridges at a 45° angle

A

Brachycephalic

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5
Q

Which baseline dissects the pupils

A

Interpupillary

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6
Q

Which baseline connects the outer canthus to the EAM

A

Orbitommeatal line (OML)

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7
Q

How many bones are found in the cerebral cranium

A

8

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8
Q

Which cranial bones forms the posterior part as well as the base of the skull

A

Occipital

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9
Q

Which cranial bones lies in the anterior base of the skull

A

Frontal

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10
Q

The area where the parietal bones meet the frontal bone is known as the

A

Ethmoid

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11
Q

What is the name of the suture between the occipital and parietal bones

A

Lambdoidal suture

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12
Q

What is the name of the suture between the temporal and parietal bones

A

Squamosal suture

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13
Q

Name the areas of incomplete fusion found in newborns

A

Fontanelles

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14
Q

What portion of the occibital bone are the jugular foramens found

A

Lateral portion

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15
Q

Between what two bony structures can the head be measure to determine it’s with

A

Parietal eminences and frontal squamous

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16
Q

Squamous means

A

Flat

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17
Q

What portion of the Temporal bone contains the organs of hearing

A

Petrous

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18
Q

What is the name of the pointed process extending from the Tympanic portion of the Temporal bone

A

Styloid process

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19
Q

Which portion of the Temporal bone contains the mandibular fossa

A

Squamous

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20
Q

And which bone does the sella turcica lie

A

Sphenoid

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21
Q

The anterior clinoid process is located on which portion of the sphenoid bone

A

The lesser wing

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22
Q

The ethmoid sinuses are located where

A

Lateral masses or ladyrinths

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23
Q

The Crista galli Is located on which portion of the ethmoid bone

A

Cribriform plate

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24
Q

In which section of the sphenoid bone is the foramen ovale located

A

The greater wing

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25
The optic foramen is located in which bone
Sphenoid
26
Which portion of the ethmoid bone helps form the bony nasal septum
Perpendicular plate
27
Which sinus group is well developed at birth
Maxillary
28
What are the function of the sinuses
1) Decreased weight of cranium 2) Warm And moisten air 3) Shock absorbers for trauma
29
Why are sinus views performed upright
To demonstrate fluid
30
What is the second largest sinus group
Frontal
31
In the lateral Skull projection which baseline is perpendicular to the image receptor
Interpupillary
32
Where is the central ray location for the lateral skull production
2” superior to EAM
33
How can you determine you have a good lateral skull radiograph
Orbital roofs are superimposed
34
In the PA skull projection, Which baseline is perpendicular to the IR
Orbitomeatal line (OML)
35
In the PA skull projection, where are the Petrous ridges located?
Lower 1/3 of the orbits (middle orbits)
36
Where is the central ray exit point for a PA skull
Perpendicular through nasion
37
Which cranial bone is best demonstrated on a PA skull radiograph
Frontal
38
In the AP axial projection for skull, How many degrees and in which direction is the tube angled if the IOML is perpendicular
37° caudad
39
Where does the central ray enter for a Towns view
30° caudad, 2-2 1/2” above glabella
40
What structures are demonstrated within the foramen magnum in an AP axial projection
Dorsum Sellae and posterior Clinoid processes
41
Which sinus projection best demonstrates all for sinus groups
Lateral
42
If the orbitomeatal line (OML) Is perpendicular in a PA Caldwell projection, How many degrees and in which direction is the tube angled
15° caudad
43
How many degrees does the orbitomeatal line Form to the table in a Parietoacanthial projection
37°
44
Where are the Petrous Ridge located in a water’s view for sinuses
Below the maxillary sinuses
45
Where are the Petrous ridges located in a PA Caldwell projection?
Lower 1/3 of the orbits
46
Which sinus group is best demonstrated in an SMV projection?
Sphenoid
47
Where is the central ray location for a lateral sinus projection
Horizontal, perpendicular 1/2-1” inferior to the outer canthus
48
Which baseline is utilized in a submentovertical (SMV) projection?
Infraorbitomeatal line (IOML)
49
In the open mouth waters projection, which sinus group is best demonstrated
Sphenoid sinuses
50
Which projection best demonstrates the maxillary sinuses
Parietoacanthial (PA Waters’s)
51
What are the bones within the middle ear
Tympanic cavity Tympanic membrane Auditory ossicles
52
What is the function of the tympanic cavity and which part of the ear is it located
Communicates with the nasal pharynx through the auditory tube Found in the middle ear
53
What is the function of the Tympanic membrane and where is it found within the ear
Transmission of sound vibrations Found in the middle ear
54
What are the functions of the auditory ossicles and where is it located within the ear
Permit vibratory motion Found in the middle ear
55
What are the bones within the inner ear
Cochlea Vestibule Semi-circular canals
56
What is the function of the cochlea and where is it found within the ear
For hearing Found in inner ear
57
What are the functions for the vestibule and semicircular Canals and where are they located within the ear
For balance Found in inner ear
58
Which parts of the inner ear are located in the petrous portion
Vestibule and semi-circular canals
59
What bones are found in the outer ear
Auricle and EAM
60
What is the function of the auricle bone and where is it located within the ear?
It’s an oval shaped sound collecting organ Found in outer ear
61
What is the function of the EAM and where is it found within the ear
Sound conducting canal Found in the outer ear

Radiology Sem 3 (2 decks)

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