Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

maris ga 2 > skull development > Flashcards

skull development Flashcards

(102 cards)

Start Studying
1
Q

neurocranium is the

A

protective case for the brain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

the neurocranium is derived from

A

occipital somites and somitomeres

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

viscerocranium is the

A

skeleton of the face

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

the viscerocranium is derived from

A

ectoderm via the invaginated head neural crest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

the membranous portion of neurocranium is derived from the

A

neural crest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

the chonral portion of neurocranium is partly derived from the

A

neural crest and partly from the occipital somites and somitieres

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

the cartilaginous neurocranium aka

A

chondrocranium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what kinds of bones are the cartilaginous neurocranium

A

bones of the base of the skull

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what kind of bones are the membranous neurocranium

A

flat bones

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is the difference between the membranous nad cartilaginous

A

there is an intermediate stage in cartilaginous stage. membranous: mesenchymal membrane > ossification

cartilaginous: mesenchymal membrane > cartilaginous stage > ossification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what type of ossification does the cartilaginous neurocranium endergo

A

endochondral ossification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what is the location of the membranous neurocranium

A

sides and roof

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what is a fontanel

A

fibrous tissue membrane separating the bones of the calvaria

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what is the calvaria

A

skull cap

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

palpation of the fontanels enables the physician to determine

A

profress of growth of the frontal and parietal bones

degree of hydration of the infant

level of intracranial pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

the frontal eminence is a

A

primary center of ossification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

if the anterior fontanelle is depressed means

A

dehydration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what dose it mean if fontanelle is bulging out

A

tumor or hypersomethign?

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

what age should the anterior fontanelle close

A

1.5 years old (18 months)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

when should the posterior fontanelle close

A

6 months

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

if the posterior fontanelle does not close it shows

A

retardation of ossification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

anterior fontanel is what shaped

A

diamond

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

ant. fontanel is future site of

A

bregma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

when does the union of the halves of the frontal begin

A

2nd year

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
when is the frontal bone completely fused
8th year
26
what is a metopic suture
extra suture in the frontal bone due to failure of the frontal bones to completely fuse
27
what shape is posterior fontanel
triangular
28
the post font is future site of
lambda
29
when does the posterior fontanel begin to close
first few months after birth
30
when does the post fonta finishes closing
end of 1st year
31
what are the other two fontanels
anterolateral and posterolateral
32
anterolateral fontanels aka
sphenoidal
33
posterolateral fontanels aka
mastoid
34
when does the calvaria mold
passage through the birth canal
35
caput succedanun
swelling of soft tissue of scalp and cone head during prolonged labor
36
the sphenoidal fontanel becomes teh
pterion
37
the mastoid fontanel becomes the
asterion
38
how many types of ossification does the viscerocranium go through
cartilaginous, membranous (2)
39
the viscerocranium is formed mainly by cartilages of the first
two pharyngeal arches
40
the 1st arch dorsal portion makes
maxillary process, maxilla, zygomatic bone, part of temporal bone
41
1st arch ventral portion makes
Meckel's cartilage/mandibular process mesenchyme around cartilage makes mandible cart disappears except sheath forms sphenomandibular ligament dorsal tip forms incus and malleus MAIN MANDIBLE MALLEUS INCUS
42
2nd arch dorsal makes
stapes and styloid process
43
2nd arch ventral portion makes
lesser horns and superior portion of hyoid bone
44
what does the third arch cartilage form
rest of hyoid bone
45
what is the future mouth
stomadeum
46
the small facial region of the cranium is a result of
small size of jaws virtual absence of the paranasal sinuses underdevelopment of facial bones at birth
47
examples of paranasal sinuses
frontal, maxillary, sphenoid
48
the capacity of the calvaria normally increases until about what age
16 years of age
49
when does the paranasal sinueses reach their max size
during puberty
50
what does the paranasal sinuses contribute to
definitive shape of face, lightening the skull, resonance of the voice
51
what else contributes to the shape of the face
eruption of permanent teeth
52
what happens when u get sinusitis
muffled voice cause air filled with fluid
53
what is craniosynostosis (general)
premature closure of the sutures of the skull
54
doedoes craniosynostosis effect mental ability
no
55
scaphocephaly
premature closure of the sagittal suture (looks like a boat)
56
plagiocephaly
premature closure of coronal or lamboid suture on ONE SIDE causing lopsidedness
57
oxycephaly aka
turricephaly
58
oxycephaly
premature closure of the coronal suture (back gets big)
59
acrania associated with
meroanencephaly which results from failure of the cranial end of the neural tube to close
60
when does the acrania occur
4th week of development
61
what is acrania simply
absence of a calvaria
62
what is acrania associated with
folic acid defficiency
63
what is meroanencephaly
partial loss of brain specifically cerebrum is gone so only cerebellum and brainstem there
64
what is microcephaly
result of abnormal CNS development, usually microcephalics are severely mentally retarded
65
what are the components of the pharyngeal arch
artery cartilaginous rod that forms the skeleton muscular component nerve
66
pharyngeal cleft/groove
these grooves separate the pharyngeal arches externally
67
pharyngeal pouch
where the pharyngeal arches pass into
68
pharyngeal membrane
the endoderm of the pouches contact the ectoderm of the pharyngeal grooves and together form this double layer
69
caput succedanun
swelling of soft tissue of scalp and cone head during prolonged labor
70
the sphenoidal fontanel becomes teh
pterion
71
the mastoid fontanel becomes the
asterion
72
how many types of ossification does the viscerocranium go through
cartilaginous, membranous (2)
73
the viscerocranium is formed mainly by cartilages of the first
two pharyngeal arches
74
the 1st arch dorsal portion makes
maxillary process, maxilla, zygomatic bone, part of temporal bone
75
1st arch ventral portion makes
Meckel's cartilage/mandibular process mesenchyme around cartilage makes mandible cart disappears except sheath forms sphenomandibular ligament dorsal tip forms incus and malleus MAIN MANDIBLE MALLEUS INCUS
76
2nd arch dorsal makes
stapes and styloid process
77
2nd arch ventral portion makes
lesser horns and superior portion of hyoid bone
78
what does the third arch cartilage form
rest of hyoid bone
79
what is the future mouth
stomadeum
80
the small facial region of the cranium is a result of
small size of jaws virtual absence of the paranasal sinuses underdevelopment of facial bones at birth
81
examples of paranasal sinuses
frontal, maxillary, sphenoid
82
the capacity of the calvaria normally increases until about what age
16 years of age
83
when does the paranasal sinueses reach their max size
during puberty
84
what does the paranasal sinuses contribute to
definitive shape of face, lightening the skull, resonance of the voice
85
what else contributes to the shape of the face
eruption of permanent teeth
86
what happens when u get sinusitis
muffled voice cause air filled with fluid
87
what is craniosynostosis (general)
premature closure of the sutures of the skull
88
doedoes craniosynostosis effect mental ability
no
89
scaphocephaly
premature closure of the sagittal suture (looks like a boat)
90
plagiocephaly
premature closure of coronal or lamboid suture on ONE SIDE causing lopsidedness
91
oxycephaly aka
turricephaly
92
oxycephaly
premature closure of the coronal suture (back gets big)
93
acrania associated with
meroanencephaly which results from failure of the cranial end of the neural tube to close
94
when does the acrania occur
4th week of development
95
what is acrania simply
absence of a calvaria
96
what is acrania associated with
folic acid defficiency
97
what is meroanencephaly
partial loss of brain specifically cerebrum is gone so only cerebellum and brainstem there
98
what is microcephaly
result of abnormal CNS development, usually microcephalics are severely mentally retarded
99
what are the components of the pharyngeal arch
artery cartilaginous rod that forms the skeleton muscular component nerve
100
pharyngeal cleft/groove
these grooves separate the pharyngeal arches externally
101
pharyngeal pouch
where the pharyngeal arches pass into
102
pharyngeal membrane
the endoderm of the pouches contact the ectoderm of the pharyngeal grooves and together form this double layer

maris ga 2 (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions