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MRT > CRANIAL > Flashcards

CRANIAL Flashcards

1
Q

Biggest foramen in the skull is?

A

Foramen Magnum

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2
Q

What 2 things pass through optic foramen?

A

Optic Nerves and ophthalmic artery

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3
Q

Ethmoid bone forms most of the surface of:

A

Nasal Cavity

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4
Q

List cranial bones

A

ethmoid, frontal, partial, occipital, temporal, sphenoid

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5
Q

Which cranial bone articulates with all other cranial bones?

A

Sphenoid

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6
Q

Which foramen is located in the cribriform plate of the ethmoid?

A

Olfactory Foramen

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7
Q

What passes through the olfactory foramen?

A

Olfactory nerves for smell

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8
Q

What does the ethmoid bone consist of?

A

Cribriform plate, crista galli, perpendicular plate, and lateral masses

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9
Q

Which foramen is located in the lesser wing of the sphenoid?

A

Optic foramen

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10
Q

What travels through the carotid canal?

A

Internal carotid artery

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11
Q

Where is the foramen magnum located?

A

Occipital bone

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12
Q

What is within the foramen magnum?

A

Brain stem and spinal cord

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13
Q

What sinuses are located in the frontal bone?

A

2 frontal sinuses

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14
Q

Function of cranial bones

A

form cranial cavity and protect brain

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15
Q

Cranial floor regions - 3 cranial fossa

A

Anterior, middle, posterior cranial fossa

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16
Q

Calvaria (skull cap) consist of

A

frontal, occipital, parietal, 2 plates of compact bone, inner layer of spongy/trabecular bone (diploe)

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17
Q

Floor consist of

A

Ethmoid, sphenoid, occipital, frontal, temporal

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18
Q

What type of bone is the skull

A

flat

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19
Q

What type of joint are the sutures - adults

A

fibrous, synarthrosis

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20
Q

Name the sutures

A

coronal, sagital, lambdoidal, squamosal

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21
Q

What type of joint are the sutures - younger

A

Ampiarthrosis (slight move)

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22
Q

list Suture landmarks

A

Bregma, Lambda, Pterions, Asterions

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23
Q

Coronal suture location

A

between frontal and parietal bones

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24
Q

sagital suture location

A

superior midline between parietal bones

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25
Q

lambdoidal suture location

A

posteriorly between occipital bone and parietal bones

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26
Q

squamosal suture

A

lateral part of skull between parietal and temporal bone

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27
Q

bregma landmark location

A

anterior end of sagital suture

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28
Q

lambda landmark location

A

posterior end of sagital suture

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29
Q

pterions landmark location (right and left one)

A

junction: parietal, temporal, greater sphenoid wing

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30
Q

asterions landmark location

A

Posterior to the ear where the squamosal and lambdoidal sutures meet

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31
Q

pterions landmark for?

A

middle meningeal artery

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32
Q

Weakest part of skull

A

Middle meningeal artery

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33
Q

angle of petrous ridges to midsag plane in a mesocephalic skull

A

47 degrees

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34
Q

angle of petrous ridges to midsag plane in a brachycephalic skull

A

54 degrees

35
Q

angle of petrous ridges to midsag plane in a dolichocephalic skull

A

40 degrees

36
Q

Sphenoid consist of what?

A

Body (1), lesser wings (2), greater wings (2), and pterygoid process (2)

37
Q

Body of sphenoid contains

A

2 sphenoid sinuses and sella turcia

38
Q

What is located in the sella turcia

A

pituitary gland

39
Q

Landmark for sphenoid (sella turcia) - lateral projection

A

3/4” anterior and 3/4” superior to EAM

40
Q

In adult, what is at the junction of coronal suture and sagital suture?

A

bregma

41
Q

In infant, what is at the junction of coronal suture and sagital suture?

A

anterior fontanel (soft spot)

42
Q

Frontal bone contains what horizontally?

A

Orbital plates

43
Q

Frontal bone contains what vertically (squama)?

A

frontal sinuses (2)

44
Q

What does the frontal bone form

A

forehead

45
Q

Occipital bone is located where?

A

posteroinferior part of skull

46
Q

What does the occipital bone form

A

floor of posterior cranial fossa

47
Q

4 parts of the occipital bone

A

squama, occipital condyles (2), basilar portion

48
Q

What is C1

A

Atlanto occipital axial joint

49
Q

What passes through jugular foramen

A

Internal jugular vein

50
Q

Parietal bone articulations

A

frontal, occipital, opposite parietal bone, temporal, sphenoid

51
Q

Widest portion of skull

A

Parietal eminences of the parietal bone

52
Q

Frontal bone articulations

A

sphenoid, parietal, ethmoid, nasal bones, zygoma, maxillae facial bone

53
Q

Foramen in the frontal bone

A

Supraorbital foramen

54
Q

Which bone is the glabella located in

A

frontal bone, between the superciliary arches

55
Q

Frontal bone landmarks

A

Frontal eminences, supraorbital margins, superciliary arches, supraorbital foramina, glabella

56
Q

Eyebrow area

A

superciliary arches

57
Q

What passes through the supraorbital formina

A

supraorbital nerve and vein

58
Q

Temporal bone consist of

A

squamous portion, tympanic portion, petrous ridges, mastoid process

59
Q

What bone is the EAM located in?

A

temporal bone

60
Q

What’s the landmark for the top of the petrous ridges in a lateral projection

A

TEA (top of ear attachment)

61
Q

Thickest bone in the skull

A

Petrous ridges

62
Q

Petrous ridges project?

A

anteriorly and medially

63
Q

What does the mastoid portion of the temporal bone contain?

A

air cells that communicate with inner ear

64
Q

2 parts of the tympanic portion of the temporal bone?

A

EAM and styloid process

65
Q

Protuberance of occipital bone forms what

A

external occipital protuberance (inion)

66
Q

Landmark for the middle meningeal artery

A

Pterions

67
Q

Location of crista gali

A

ethmoid bone

68
Q

Function of crista gali

A

membranes that surround the brain attach here (provides attachment for falx cerebri)

69
Q

What does the perpendicular plate of ethmoid bone form

A

superior portion of the bony nasal septum

70
Q

What do the lateral masses of the ethmoid bone form

A

superior and middle nasal conchae

71
Q

Ethmoid bone forms most of

A

the nasal cavity

72
Q

Which bone has the hypoglosal nerve

A

occipital

73
Q

Squamous portion of the temporal bone is the

A

Zygomatic process of the temporal bone

74
Q

What structures do the petrous ridges of the temporal bone house

A

cochlea and semi-circular canals

75
Q

What skeletal division does the cranial belong to

A

Axial

76
Q

Location of sella turcia

A

body of sphenoid

77
Q

What is located in the anterior cranial fossa

A

frontal lobe of cerebrum

78
Q

What is located in the middle cranial fossa

A

temporal lobes of cerebrum

79
Q

What is located in the posterior cranial fossa

A

cerebellum, pons, medulla oblongata

80
Q

What is the function of the cochlea and semicircular canals of the petrous ridges in the temporal bone

A

hearing and balance

81
Q

2 foramen in temporal bone

A

jugular foramen and lacerum foramen

82
Q

What does it mean if orbit plates are not superimposed on radiograph?

A

tilt

83
Q

What does it mean if orbit plates are superimposed on radiograph?

A

no tilt

84
Q

Location of hyoid

A

Between mandible and larynx

MRT (8 decks)

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