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Positioning ll (mine) > Anatomy of the Skull > Flashcards

Anatomy of the Skull Flashcards

1
Q

How many total bones are there for the skull?

A

22 bones

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2
Q

How many groups is the skull then divided into?

A

2 groups

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3
Q

How many bones are in the cranial bones?

A

8 bones

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4
Q

what is the cranial bone?

A

top of the skull

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5
Q

how many bones are in the facial bones?

A

14 bones

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5
Q

where are the facial bones?

A

up on the front

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6
Q

The cranial bone is further divided into:

A
  • calvaria
  • floor
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7
Q

What is the calvaria of the cranial bones?

A

top of the skull

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8
Q

What is the floor of the cranial bones?

A

base of the cranial bones

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9
Q

inner layer of spongy bone separating two outer plates/ inner plates of compact tissue?
- composition of calvarium bones

A

Diploe

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10
Q

What bones are classified under calvaria (top of the skull)?

A
  • frontal
  • occipital
    -right parietal
  • left parietal
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11
Q

What bones are classified under floor (base) for the skull?

A

-ethmoid
-sphenoid
-right temporal
- left temporal

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12
Q

How many sections is the skull split into?

A

3 sections
- anterior cranial fossa
- middle cranial fossa
-posterior cranial fossa

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13
Q

What does the anterior cranial fossa do?

A

houses the frontal lobes of cerebrum; extends from the anterior frontal bone to lesser wings of the sphenoid

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14
Q

What does the middle cranial fossa do?

A

houses temporal bones, extends from lesser wings of sphenoid to apices of petrous ridges

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15
Q

What does the posterior cranial fossa do?

A

deep depression posterior to petrous ridges; protects cerebellum, pons and medulla oblongata

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16
Q

fibrous joints that connect the bones of the skull

A

sutures

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17
Q

Where is the coronal suture?

A

between frontal and parietal bones

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18
Q

Where is the sagittal suture?

A

on top of the head between two parietal bones

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19
Q

Where is the squamosal suture?

A

between temporal bone and parietal bones

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19
Q

Where is the lambdoidal suture?

A

between occipital and parietal bones

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20
Q

junction of coronal and sagittal sutures
- used to be the anterior frontanel

A

bregma

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21
Q

junction of sagittal and lambdoidal sutures
- used to be the posterior frontanel

A

lambda

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22
Q

landmark in between eyebrows

A

glabella

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23
Q

very top of the head

A

bregma

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24
Q

areas of incomplete ossification in the infant skulls ( soft spots)?

A

fontanels

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25
Q

Adult cranial size usually achieved at what age?

A

12 years old

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26
Q

once was the sphenoidal fontanel

A

pterion

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27
Q

once was the mastoid fontanel

A

asterion

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28
Q

has vertical portion (frontal squama) and horizontal portions

A

frontal bone

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29
Q

frontal squama of the frontal bone forms what?

A

forms forehead and anterior part of cranial vault

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30
Q

the horizontal portion of the frontal bone forms what?

A

form orbital plates, part of roof of nasal cavity, and greater part of anterior cranial fossa

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31
Q

the frontal bone articulates with what?

A

articulates with right and left paritelas, sphenoid, ethmoid, nasal bones, and zygoma

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32
Q

The inner layer of spongy tissue found inside cranial bones is called :

A

Diploe

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33
Q

The fontanel located at the junction of the coronal and sagittal sutures is the

A

Bregma
or foramina

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34
Q

The two parietal bones articulate with the frontal bone to form what suture ?

A

Coronal

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35
Q

The cranial bone that provides a depression to house the pituitary gland is what bone

A

sphenoid

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36
Q

The fontanel located at the junction of the lamboidal and sagittal sutures is the ?

A

Lambda

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37
Q

The bone that forms the anterior portion of the cranium is what bone

A

Frontal

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38
Q

The cranial bone located between the orbits and posterior to the nasal bones is what bone

A

Ethmoid

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39
Q

The two parietal bones and the occipital bone joint together to form what suture

A

Lambdoidal

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40
Q

The anterior clinoid process is located on what bone

A

Sphenoid

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41
Q

Which bone contains the transmission of the olfactory nerves

A

Ethmoid

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42
Q

bones that are at the top of the skull

A

cranial

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43
Q

bones of the skull that are in the front

A

Facial bones

44
Q

what is the plane that is front to back

A

coronal

45
Q

what is the plane that is up and down

A

axial

46
Q

what is the plane that is left and right

A

sagital

47
Q

landmarks of the frontal bone :

A

Frontal eminences
Supraorbital margins
Supraciliary arches
Supraorbital foramina
Glabella

48
Q

what bone Articulates with right and left parietals, sphenoid, ethmoid, nasal bones, and zygoma

A

Frontal bone

49
Q

what fits in the ethmoidal notch ?

A

ethmoid

50
Q

what does the ethmoid consist of :

A

Consists of
Horizontal plate

Vertical plate

Two light, spongy masses = labyrinths

51
Q

what bone is Located between the orbits and forms part of anterior cranial fossa, nasal cavity, orbital walls, and bony nasal septum

A

ethmoid

52
Q

what is the horizontal portion of the ethmoid bone called?

A

cribriform plate

53
Q

what part of the ethmoid bone is this: conical projection at anterior midline of cribriform plate

A

Crista galli

54
Q

what part of the ethmoid is : vertical portion; forms superior portion of bony nasal septum

A

Perpendicular plate =

55
Q

what part of the ethmoid bone contains numerous foramina for transmission of olfactory nerves

A

Cribriform plate

56
Q

what part of the ethmoid bone is this:
Contain ethmoid sinuses or air cells
Walls form part of medial walls of orbits and lateral walls of nasal cavity
Have two thin, scroll-shaped projections = superior and middle nasal conchae

A

Labyrinths

57
Q

what bone Articulates with frontal, sphenoid, lacrimal, maxilla, and vomer

A

Ethmoid bone

58
Q

what part of the ethmoid bone will meet up with the vomer and make up the nasal septum

A

Perp. plate

59
Q

what part of the parietal bone is this: prominent bulge near center of external surface of each bone
This is the point where the width of the skull should be measured to set technique

A

pariteal eminence

59
Q

Somewhat square
Have a convex external surface and concave internal surface

A

Parietal Bones

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Positioning ll (mine) (16 decks)

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