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

Test 1: Skull And Sinuses Flashcards

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
Q

The optic foramen is located in which bone

A

Sphenoid

26
Q

Which portion of the ethmoid bone helps form the bony nasal septum

A

Perpendicular plate

27
Q

Which sinus group is well developed at birth

A

Maxillary

28
Q

What are the function of the sinuses

A

1) Decreased weight of cranium
2) Warm And moisten air
3) Shock absorbers for trauma

29
Q

Why are sinus views performed upright

A

To demonstrate fluid

30
Q

What is the second largest sinus group

A

Frontal

31
Q

In the lateral Skull projection which baseline is perpendicular to the image receptor

A

Interpupillary

32
Q

Where is the central ray location for the lateral skull production

A

2” superior to EAM

33
Q

How can you determine you have a good lateral skull radiograph

A

Orbital roofs are superimposed

34
Q

In the PA skull projection, Which baseline is perpendicular to the IR

A

Orbitomeatal line (OML)

35
Q

In the PA skull projection, where are the Petrous ridges located?

A

Lower 1/3 of the orbits (middle orbits)

36
Q

Where is the central ray exit point for a PA skull

A

Perpendicular through nasion

37
Q

Which cranial bone is best demonstrated on a PA skull radiograph

A

Frontal

38
Q

In the AP axial projection for skull, How many degrees and in which direction is the tube angled if the IOML is perpendicular

A

37° caudad

39
Q

Where does the central ray enter for a Towns view

A

30° caudad, 2-2 1/2” above glabella

40
Q

What structures are demonstrated within the foramen magnum in an AP axial projection

A

Dorsum Sellae and posterior Clinoid processes

41
Q

Which sinus projection best demonstrates all for sinus groups

A

Lateral

42
Q

If the orbitomeatal line (OML) Is perpendicular in a PA Caldwell projection, How many degrees and in which direction is the tube angled

A

15° caudad

43
Q

How many degrees does the orbitomeatal line Form to the table in a Parietoacanthial projection

A

37°

44
Q

Where are the Petrous Ridge located in a water’s view for sinuses

A

Below the maxillary sinuses

45
Q

Where are the Petrous ridges located in a PA Caldwell projection?

A

Lower 1/3 of the orbits

46
Q

Which sinus group is best demonstrated in an SMV projection?

A

Sphenoid

47
Q

Where is the central ray location for a lateral sinus projection

A

Horizontal, perpendicular 1/2-1” inferior to the outer canthus

48
Q

Which baseline is utilized in a submentovertical (SMV) projection?

A

Infraorbitomeatal line (IOML)

49
Q

In the open mouth waters projection, which sinus group is best demonstrated

A

Sphenoid sinuses

50
Q

Which projection best demonstrates the maxillary sinuses

A

Parietoacanthial (PA Waters’s)

51
Q

What are the bones within the middle ear

A

Tympanic cavity
Tympanic membrane
Auditory ossicles

52
Q

What is the function of the tympanic cavity and which part of the ear is it located

A

Communicates with the nasal pharynx through the auditory tube

Found in the middle ear

53
Q

What is the function of the Tympanic membrane and where is it found within the ear

A

Transmission of sound vibrations

Found in the middle ear

54
Q

What are the functions of the auditory ossicles and where is it located within the ear

A

Permit vibratory motion

Found in the middle ear

55
Q

What are the bones within the inner ear

A

Cochlea
Vestibule
Semi-circular canals

56
Q

What is the function of the cochlea and where is it found within the ear

A

For hearing

Found in inner ear

57
Q

What are the functions for the vestibule and semicircular Canals and where are they located within the ear

A

For balance

Found in inner ear

58
Q

Which parts of the inner ear are located in the petrous portion

A

Vestibule and semi-circular canals

59
Q

What bones are found in the outer ear

A

Auricle and EAM

60
Q

What is the function of the auricle bone and where is it located within the ear?

A

It’s an oval shaped sound collecting organ

Found in outer ear

61
Q

What is the function of the EAM and where is it found within the ear

A

Sound conducting canal

Found in the outer ear

Radiology Sem 3 (2 decks)

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