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ANTH 352 > Neurocranium and Basicranium Part 1 > Flashcards

Neurocranium and Basicranium Part 1 Flashcards

1
Q

the oblong gap between 2 orbital plates is called

A

ethmoidal notch

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2
Q

the _____ is unique to each individual

A

frontal sinus

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3
Q

____ is the original site of primary ossification

A

frontal eminence

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4
Q

frontal sinus is more evident in ___ skulls and may be retained in ____ skulls

A

infant ; female

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5
Q

supraorbital ridges are more pronounced in ____

A

males

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6
Q

supraorbital margin is sharper in ___ and more rounded in ______

A

females ; males

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7
Q

the _____ is a junction between R and L nasal bone and frontal bone

A

nasion

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8
Q

what is at the midpoint of the supraorbital margin?

A

supraorbital notch

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9
Q

lateral end of supraorbital margin is _______

A

zygomatic process of frontal

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10
Q

true or false; anterior median crest articulates with perpendicular plate of ethmoid

A

false; posterior median crest articulates with perpendicular plate of ethmoid

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11
Q

in the nasal notch are the left and right

A

nasal bones

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12
Q

true or false; nasal spine has a posterior median crest which articulates with the perpendicular plate of ethmoid

A

true

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13
Q

temporal line is site of origin for

A

temporalis mm

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14
Q

what attaches to the frontal crest?

A

falx cerebri

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15
Q

sagittal sulcus is groove for ____

A

sagittal sinus

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16
Q

true or false; right and left pars orbitalis are thick plates

A

false; they are thin

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17
Q

Posterolateral to the
supraorbital margin
is the ________
for the _______

A

lacrimal fossa; lacrimal gland

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18
Q

ehtmoidal notch is for ______

A

cribriform plate

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19
Q

what is adjacent to ethmoidal notch?

A

partial air cells of pars orbitalis

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20
Q

true or false

A

Cribriform plate of ethmoid is visible within ethmoidal

notch of pars orbitalis of frontal bone

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21
Q

foramen cecum

A

canal formed anteriorly by frontal bone and posteriorly by 2 anterior alae (“wings”) of anterior border of
crista galli of the ethmoid (situated at frontoethmoidal suture)

22
Q

Remnants of metopic
suture may be seen
at _______

A

glabella

23
Q

what are the 4 pareital bone angles?

A

Frontal - bregma
Sphenoid - pterion
Occipital - lambda
Mastoid - asterion

24
Q

posterolateral fontanelle becomes _____

A

asterion

25
Q

true or false; bregma is at the top of the head

A

false; the vertex is at the top of the head

26
Q

the metric point between the parietal foraminae is called

A

obelion

27
Q

parietal striae lines are in a _____ direction

A

posterosuperior direction

28
Q

Endocranially, each of the four angles of the parietal bone is associated with a _________

A

blood vessel

29
Q

sphenoid angle

A

anterior branch of

middle meningeal artery

30
Q

Anterosuperior and
posterosuperior angles
and intervening superior
border:

A

superior sagittal sinus

31
Q

posteroinferior angle

A

transverse sinus

32
Q

Between inner and outer tables of

parietal bones are large ________

A

diploic veins

33
Q

small bone pits
produced by pressure
atrophy from underlying
arachnoid granulations

A

arachnoid foveae

34
Q

bossing is more evident in ____ skulls, and may be retained in _____ skulls

A

infant ; female

35
Q

between supraorbital ridges is ______

A

glabella

36
Q

What is located at the T-shaped junction between right and left nasal bones and the frontal bone?

A

nasion

37
Q

what is above midpoint of supraorbital margin?

A

supraorbital notch for supraorbital artery

38
Q

posterior median crest of nasal spine is buttressed by _____ ______ of ethmoid

A

vertical plate

39
Q

true or false; endocranial surface of squama and pars orbitalis form part of anterior cranial fossa

A

true

40
Q

remnants of metopic suture may be seen at ____

A

glabella

41
Q

true or false; the parietal bones have different thicknesses throughout the bone

A

false; they have relatively even thickness

42
Q

what marks the site of obliteration of frontal fontanelle

A

bregma

43
Q

the bregma is at the junction of the ____ and _____ sutures in midline

A

coronal; sagittal

44
Q

each of the 4 angles of the parietal bone is associated with a ____ _____

A

blood vessel

45
Q

the posterior median crest of the nasal spine articulates with ____ ____ of ethmoid

A

vertical plate

46
Q

true or false; the posterior median crest of the nasal spine articulates with vertical plate of ethmoid

A

true

47
Q

true or false; anterior border of parietal is more convex

A

false; it is more concave

48
Q

posteroinferior angle of parietal border is for _____ sinus

A

transverse

49
Q

anterosuperior border and posterosuperior angles are for ____ sinus

A

superior sagittal sinus

50
Q

in the endocranial surface of the parietal bone, there is blood vessel marking on different borders. On the anterior inferior angle, the blood vessel marking is corresponding to the anterior branch of ______ _____ _____

A

middle meningeal artery

ANTH 352 (26 decks)

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