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Skull Anatomy Pt 1 Test

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1.
Name the 4 Floor Cranial bones:
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2.
What are the 5 main sutures of the skull?
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3.
What are sutures?
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4.
What are the 3 regions of the Floor of the Skull? How are they divided?
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5.
What are the 6 Sutural Junctions?
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6.
Describe the Bracycephalic skull:
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7.
At what age is Adult cranial size usually reached?
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8.
What are the names of the sutural junctions before closure (when they are still Fontanels)?
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9.
What does it mean if an infant's fontanels are bulging?
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10.
What is Dicephalus or Bicephalus?
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11.
What are the 2 divisions of the skull? How many bones each/total
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12.
What is Microcephalus?
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13.
Describe the typical skull & what it is called:
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14.
Name the 14 Facial Bones:
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15.
What are the purpose of the nasal conchae? Are they considered Facial or Cranial bones?
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16.
When discussing a bone, what does sagittal refer to?
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17.
Where are the Palantine bones located?
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18.
Do the 2 Nasal bones articulate with the Lacrimal bones?
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19.
Describe the Anterior Cranial Fossa & what it contains:
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20.
What does it mean if an infant's fontanels are sunken in?
A.
Mesocephalic: Petrous Pyramids project anteriorly & medially 47° from MSP (Petrous pyramids=thickest portion of skull --on temporal bone)
B.
Extends from the anterior frontal bone to the lesser wings of the sphenoid. Houses the frontal lobes of cerebrum
C.
Anterior (Bregma) Posterior (Lambda) 2 Mastoid (Asterion) 2 Sphenoidal (Pterion)
D.
No. They articulate with each other, a strip of maxilla, & the frontal bone
E.
Ethmoid; Sphenoid; R. & L. Temporal
F.
CORONAL--between frontal/parietal bones; SAGITTAL--top of head between 2 parietal bones; 2 SQUAMOSAL--between temporal/parietal bones R/L; LAMDOIDAL--between occipital/parietal bones
G.
Too much cranial pressure
H.
2 heads (siamese twins)
I.
2 MAXILLA--front of roof of mouth R/L 1 MANDIBLE 2 ZYGOMATIC R/L 2 PALANTINE--L shaped in back roof of mouth R/L 1 VOMER-inf port. of nasal septum 2 INFERIOR NASAL CONCHAE R/L 2 LACRIMAL R/L 2 NASAL BONES
J.
The nasal conchae warm/cool the air--look like scrolls The Inferior Nasal Conchae are considered facial bones (while the Mid & Superior are considered Cranial--part of Spheniod bone)
K.
Small head--can be caused by craniostosis.
L.
Petrous pyramids project anteriorly & medially 54° from MSP (Football head/wide-side to side) (+7 of typical)
M.
Flat part of bone
N.
Joints that connect the cranial & facial bones
O.
Cranial bones (8) & Facial bones (14) Total= 22
P.
Dehydration or drop in BP
Q.
12 years old
R.
ANTERIOR Cranial Fossa--Frontal/L. wing Sphenoid MID Cranial Fossa--L. Wings Sphenoid to Apices of Petrous Ridges POSTERIOR Cranial Fossa--Deep depression posterior to petrous ridges thru occipital bone
S.
BREGMA--coronal/sagittal suture junction; LAMBDA--sagittal/lambdoidal; 2 PTERION--Anterior junction of the squamosal,parietal, & sphenoid; 2 ASTERION--Posterior junction of Squamosal: occipital, parietal, mastoid portion of temporal bone
T.
Just anterior to the soft palate ("L" shaped)
Type the Answer that corresponds to the displayed Question.
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21.
Which skull suture is a pair?
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22.
At what age range is the skull developing?
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23.
Plow
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24.
Deviation in the palatine bone (no bone).
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25.
No Skull
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26.
Tooth socket (or air sac in lung)
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27.
Big head. Can also have Hydrocephalus (water).
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28.
Water in the head.
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29.
Tear
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30.
1.The study of the forms of things, in particular. 2.The branch of biology that deals with the form of living organisms, and with relationships between their structures.

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