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Radiology courses > Skull Test > Flashcards

Skull Test Flashcards

1
Q

The base of the anterior portion of the occipital bone contains two large openings that allow blood vessels and nerves to pass through. These two openings are called the

A

Jugular foramina

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2
Q

Which skull type is narrow from side to side

A

Dolichocephalic

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3
Q

The cranial bones are rigidly joined together by articulations called

A

Sutures

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4
Q

Which line should be placed parallel to the plane of the IR for the SMV projection of the cranial base

A

Infraorbitomeatal line

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5
Q

The base of the temporal bone contains an opening through which the internal carotid artery passes and is termed the

A

Foramen lacerum

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6
Q

Which bone has condyles that articulate with the atlas of the cervical spine

A

Occipital

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7
Q

What two are clearly demonstrated within the foramen magnum during an AP axial Towne projection of the skull

A

Dorsum sellae

Posterior clinoids

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8
Q

Which skull suture is located between the parietal bones

A

Sagittal

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9
Q

The suture located between the occipital bone and the parietal bones is the

A

Lambdiodal

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10
Q

All are clearly demonstrated on an SMV projection of the cranial base

A

Carotid canals

Sphenoid sinuses

Mastoid process

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11
Q

Often a patient cannot be turned into the prone position for a PA axial projection of the skull, Caldwell method). What central ray angle would be used if the AP axial projection is used instead

A

15 degrees cephalic

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12
Q

The six areas of incomplete ossification in a newborn infants skull are called

A

Fontanels

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13
Q

Which of the following lines is placed perpendicular to the image receptor plane for the AP axial Towne projection

A

Orbitomeatal line

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14
Q

How many bones make up the cranium

A

8

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15
Q

The central ray and center of the image receptor position for a lateral projection of the skull is ___ inches ____the EAM

A

2, above

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16
Q

The petromastoid portion is a part of which bone

A

Temporal

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17
Q

For an SMV projection of the cranial base, the central ray should always be perpendicular to the ____ line

A

Infraorbitomeatal line

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18
Q

How many bones are contained in the skull

A

22

19
Q

Which two bones are contained in the floor of the cranium

A

Sphenoid

Ethmoid

20
Q

Which of the following skull types is considered average size and shape

A

Mesocephalic

21
Q

Which skull suture is found between the frontal and parietal bones

A

Coronal

22
Q

If the infraorbitomeatal line is placed perpendicular to the IR during an AP axial (Towne) projection of the skull, how much is the central ray angled

A

37 degrees cuadad

23
Q

What is the central ray angulation for the SMV projection

A

Perpendicular 0 degrees

24
Q

The central ray angle for the PA axial (Caldwell) projection of the skull is

A

15 Caudad

25
Q

Which method of examining the skull will demonstrate the petrous ridges in the orbits, the ethmoid and frontal sinuses, and the crista gali

A

Caldwell

26
Q

If the patient cannot flex the neck to place the orbitomeatal line perpendicular to the image receptor for an AP axial Towne projection, which line should be placed perpendicular

A

Infraorbitomeatal line

27
Q

The superior aspect of the sphenoid bone contains a deep depression that contains the

A

Pituitary gland

28
Q

What two bones are contained in the calvarium

A

Frontal

Parietal

29
Q

Which plane of the head is placed parallel to the plane of the IR for a lateral projection of the skull

A

MSP

30
Q

The bones of the cranium are joined together by fibrous joints called

A

Sutures

31
Q

In a typically shaped head, the petrous pyramids project anteriorly and medially at what angle

A

47 degrees

32
Q

Radiographic demonstration of the cranial base is performed by which method

A

SMV Schüller

33
Q

Which two methods will clearly demonstrate the petrous ridges, foramen magnum, dorsum sellae, and the posterior clinoid process

A

Towne

Haas

34
Q

Which of the following is perpendicular to the IR plane for a Caldwell projection of the skull

A

Orbitomeatal line

35
Q

All of the following are cranial bones

A

Frontal

Sphenoid

Ethmoid

36
Q

The posterior half of the base of the skull is formed by which bone

A

Occipital

37
Q

The thickest and densest portion of bone in the cranium is the

A

Petrous portion of the temporal bone

38
Q

Which bone in the skull contains the auditory organs and the organs of hearing

A

Temporal

39
Q

All of the following are seen on a lateral image of the skull

A

Superimposed orbital roofs

Sella turcica in profile

Temporomandibular joints superimposed

40
Q

All of these structures are demonstrated on an AP axial Towne projection of the skull

A

Foramen magnum

Occipital bone

Petrous ridges

41
Q

Which projection of the skull requires MSP to be positioned parallel and the Interpupillary line perpendicular to the IR plane

A

Lateral

42
Q

What is the average central ray angulation for the PA axial Haas projection of the skull

A

25 degrees cephalic

43
Q

For an AP axial Towne projection of the skull, the center of the IR is at or near the level of the

A

Foramen magnum

44
Q

The large aperture in the occipital bone, through which the medulla oblongata and spinal cord exit, is termed the

A

Forman magnum

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