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spine & skull > Skull > Flashcards

Skull Flashcards

1
Q

Which cranial bone is best visualized on the AP Axial Towne method of the skull?

A

Occipital

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2
Q

Which projection demonstrates the frontal bone with minimal distortion and superimposition?

A

PA Axial Caldwell method

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3
Q

On a properly positioned PA Axial projection of the skull (Caldwell) the CR exits the

A

Nasion

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4
Q

The articulation of the frontal bones with the nasal bones is known as the

A

Nasion

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5
Q

The pterygoid process is a part of which bone?

A

Sphenoid

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6
Q

On a Parietoacanthial projection of the sinuses, the petrous ridges should be

A

Projected below the maxillary sinuses

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7
Q

The line that extends through the midline of the orbits is also known as

A

Interpupillary line

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8
Q

Which facial bone is found in the medial wall of the orbit between the ethmoid and the maxilla?

A

Lacrimal

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9
Q

When performing a lateral projection to evaluate the facial bones, the CR entrance point is

A

Midway between outer canthus and EAM

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10
Q

In which bone are the optic foramina located?

A

Sphenoid

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11
Q

The parietoacanthial projection of the sinuses (modified waters) best demonstrates which sinuses?

A

Sphenoid

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12
Q

A properly positioned PA Axial Caldwell of the skull will project the petrous ridges

A

In the lower third of the orbits

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13
Q

Which group of sinuses is located directly inferior and anterior to the sella turcica?

A

Sphenoidal

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14
Q

Which three bones does the temporal bone articulate with?

A

Parietal, occipital, sphenoidal

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15
Q

What is most likely indicated if an air fluid level is seen in the sphenoid sinus on a lateral skull radiograph?

A

Basal skull fracture

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16
Q

The hard palate is formed by which bones?

A

Maxilla and palatine

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17
Q

Which projection requires the patient to extend the neck until the IOML is parallel to the IR

A

SMV

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18
Q

Which cranial bone contains a petrous portion and mastoid air cells?

A

Temporal bone

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19
Q

Which sinuses are visualized on a properly positioned lateral projection?

A

Ethmoid, frontal, maxillary, sphenoid (ALL)

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20
Q

Which radiographic positioning landmark corresponds to the location of the anterior nasal spine?

A

Acanthion

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21
Q

When taking a PA Axial projection of the skull, the CR is directed

A

15 degrees caudad

22
Q

What is the name of the articulation between parietal bones?

A

Sagittal suture

23
Q

Which facial bones are best demonstrated on the PA Axial Caldwell

A

Orbits and zygoma

24
Q

A blowout fracture involves the

A

Floor of the orbits

25
Q

Where is the squamosal suture?

A

Between the parietal bones and temporal bones

26
Q

Which of the following is the positioning landmark located at the junction of the nose and upper lip?

A

Acanthion

27
Q

Which facial bone forms the inferior part of the nasal septum?

A

Vomer

28
Q

Which structure houses the pituitary gland?

A

Sella turcica

29
Q

Which projection of the cranium demonstrates the petrous ridges within the orbits?

A

PA

30
Q

What term is used to identify the angle of the mandible?

A

Gonion

31
Q

Which group of paransal sinuses is located directly inferior and anterior to the sella turcica?

A

Sphenoid

32
Q

In which bone are the optic foramina located?

A

Sphenoid bone

33
Q

What are the 8 bones of the skull?

A

Frontal, occipital, right and left parietal, right and left temporal, sphenoid, ethmoid

34
Q

What is the bony prominence on the frontal bone between the eyebrows that is a common positioning landmark?

A

Glabella

35
Q

The large round hole in the anterior portion of the occipital bone is called the

A

Foramen magnum

36
Q

What does the ethmoid bone form?

A

Anterior floor of the cranium

37
Q

What cranial bone is shaped like a bat?

A

Sphenoid

38
Q

What cranial bones do the temporal bones articulate with?

A

Sphenoid and occipital

39
Q

The EAM is the opening to the

A

Ear canal

40
Q

The parietal bones are joined by which suture?

A

Sagittal

41
Q

The joint that joins the parietal and temporal bones is which suture?

A

Squamosal

42
Q

Which facial bone is the largest immovable bone of the face and it articulates with all other facial bones besides mandible?

A

Maxilla

43
Q

The junction of the two maxillary bones forms a superior prominence called the

A

Anterior nasal spine

44
Q

Which facial bone is the only movable bone?

A

Mandible

45
Q

Which bone forms the inferior portion of the nasal septum?

A

Vomer

46
Q

Where is the CR directed in the AP Axial Towne projection of the skull?

A

30 degrees caudad, 2.5in superior to the glabella

47
Q

If patient cannot flex neck sufficiently to get OML perpendicular to IR in the AP Axial Towne projection, what can be done?

A

IOML can be placed perpendicular and CR angled 37 degrees caudad

48
Q

Where is the CR directed for a lateral projection of the skull?

A

2in superior to EAM

49
Q

Where is the CR directed for the Parietoacanthial Waters projection of the facial bones?

A

Acanthion

50
Q

Where is the CR directed for a lateral projection of the nasal bones?

A

1/2in inferior to nasion

51
Q

What is a cerebral concussion?

A

Traumatic brain injury caused by a blow to the head that causes brief unconsciousness

52
Q

What is a countrecoup injury?

A

A severe blow to the head may cause the brain the move within the cranium, producing an injury on the opposite side of the blow

spine & skull (2 decks)

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