SKULL Flashcards

(35 cards)

1
Q

Skull contains ____ bones divided into the cranial and facial bones

A

22

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2
Q

How many cranial bones are in the skull? How are they divided?

A

8 cranium bones divided into calvaria and floor

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3
Q

Which bones articulate with the parietal bone?

A
Frontal
Temporal
Occipital 
Sphenoid
And opposite parietal bones
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4
Q

What foramen is in the occipital bone and what passes through it?

A

Foramen magnum, the inferior portion of the medulla oblongata passes through to join the spinal cord

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5
Q

The ethmoid bone has two lateral masses called

A

Labryinths

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6
Q

What bones do the sphenoid bone articulate with?

A

All other 7 bones of the cranium

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7
Q

The ________ of the temporal bones contains organs of hearing and balance

A

Petromastoid portion

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8
Q

The occipital bone articulates with

A

Parietals
Temporals
Sphenoid
C1

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9
Q

What is the function of facial bones?

A

Provide shape and support for the face

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10
Q

Cranial and facial bones are joined by fibrous joints called

A

Sutures (except for mandible)

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11
Q

The junction of the coronal and sagittal suture

A

Bregma

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12
Q

The junction of lambdoidal and sagittal suture

A

Lambda

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13
Q

The junction of the parietal, squamosal, and greater wing of sphenoid

A

Pterion

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14
Q

The junction of the occipital, parietal, and mastoid portion of the temporal bone

A

Asterion

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15
Q

How many incomplete ossifications are there in a newborns skull?

A

6 called fontanels

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16
Q

What are the average measurements of the skull?

A

6 inches side to side
7 front to back
9 vertex to submental region

17
Q

Where is the sphenoid fontanel located?

A

Pterion junction

18
Q

Which cranial type is short and broad from side to side? Petrous portions form what angle with the msp…

A

Brachycephalic, 54 degrees

19
Q

Which cranial type is typical/average? Petrous portions form what angle with the msp…

A

Mesocephalic, 47 degrees

20
Q

Which cranial type is long and narrow side to side? Petrous portions form what angle with the msp…

A

Dolichocephalic, 40 degrees

21
Q

Which of all the sinuses are well developed at birth?

22
Q

Another name for maxillary sinuses?

A

Antra of highmore

23
Q

Maxillary sinuses are roughly __ in shape

24
Q

What is the second largest sinuses?

25
Where is the ethmoid sinuses located?
Lateral masses
26
T or F, Sphenoidal sinuses are always paired
False, normally paired but can be SINGLE
27
Where is the sphenoid sinuses located?
Sphenoid bone below sella turcica
28
Sinus group visuallized in the lateral view
All 4 sinuses
29
What bone articulates with the zygoma to help form cheeks?
Maxillary bone
30
Facial bone that helps form bridge of the nose and articulates with…
Nasal bones, articulates with opposite nasal bones, maxillary bone, and frontal bone
31
Zygomatic process is found on …
Maxillary and temporal bone
32
Smallest bone in the skull
Lacrimal
33
What passes through the lacrimal foramen?
Tear of duct
34
The lacrimal forms the __ wall of the orbits
Medial
35
Maxillary bone forms the __ walls and most of the __ of the nasal cavity
Lateral, floor