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Anatomy Winter 2012 > Osteology of Skull > Flashcards

Osteology of Skull Flashcards

1
Q

What bones surrund greater wingo fsphenoid bone (3)

A

Forntal, Parietal ,and Temproal bone

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2
Q

What forms the calvaria (4)

A

frotnal bne, pariatal bones, and the squamous parts of teh temporal and occipital bones

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3
Q

What are the bones of the cranium (6)

A 
Frontal bone
Paired parietal bones
Paired temporal bones
Single occipital bone
Single sphenoid bone
Single ethmoid bone
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4
Q

Posterior Articulation

A

Parietal bones via the Coronal Suture

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5
Q

Inferior Articulation (6)

A 
Sphenoid
Zygomatic 
Lacrimal
Maxiallary
Nasal
Ethmoid bones
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6
Q

What runs through supraorbital Notch (foramen)

A

Supraorbital Nerve and Artery

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7
Q

What are superciliary ridges

A

brow ridges

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8
Q

What is the Zygomatic Process

A

for articulation with zygomatic bone

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9
Q

What is the coronal suture

A

From side to side across top of skull

Divides frontal bone from teh two parietal bones

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10
Q

What is the Lambdoid suture

A

where parietal bones meet occipital bone

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11
Q

What are superior and inferior temproal lines

A

continue posteriorly onto parietal bones- for attachemnt of

(superior) TEMPORALIS FASCIA and (inferior) Temporalis MUSCLE

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12
Q

What is the Pterion

A

“dont get hit in teh temple)

This is the thinnest part of the skull!
Translucent

Grooves for Meningeal vessesls

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13
Q

What are Grooves in Frontal bone for

A

on inside surface for meningeal vessels

Can be seen Pterion

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14
Q

What are Sinuses

A

part of paranasal sinus sytem- usually drain through ethmoid sinuses

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15
Q

How do parietal bones articulate medially

A

Via the Sagittal Suture

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16
Q

How do parietal bones articulate Anteriorly

A

With frontal bones via coronal suture

17
Q

How doe Paritetal bones articualte posterioly

A

with occipital bone via Lambdoid suture

18
Q

What do parietal bones articualte with inferiorly

A

Temporal bones

19
Q

Foramen for Emissary Vein

A

near sagittal border

20
Q

What are intrasutural bones

A

rare, called “inca bones” b/c prominent in Inca iIndieanns

21
Q

Which bone contains the FORAMEN MAGNUM

A

Occipital Bone

22
Q

What does Occipital bone articulate with anteriorally and laterally

A

Mastoid and petrous parts of temporal bones

23
Q

What does Occipital bone articualte with Anterioly

A

Sphenoid bone at the midlein

24
Q

What does Occipital bone articualte with infeirorly

A

Superior articular facets of the atlas vertebra via teh occipital condyles forming ATLANTOOCCIPITAL JOINTS

25
Q

What three cranial nerves come out of jugular foramen

A

Vagus N
Glossopharyngeal N
Accessory N

26
Q

What are the foramina from anterior to posterior on inferior skull

A

Open Some Canned Jugs Hun

Foramen Ovale
Foramen Spinosum
Carotid Canal
Jugular Canal
Hypoglaossal Canal
27
Q

Which bone is the “yes” bone?

A

Atlas!!!

Its articulation with teh Occipital COndyle allows one to say yes

28
Q

What is the No Bone

A

2nd Cervical Vertebrae

Atlas rotates on dens of 2nd vertical vertebrae (axis)

29
Q

What is Diploe

A

Cancellous bone of the skull

Where CSF is circulated around brain and recycled trhough Arachnoid Granulations

30
Q

What is the Sulcus for Superior Sagittal Sinus

A

Characteristic fo vein with endothelial-like structures
Formed by reflection of meninges that surrounds brain

Major stucture draining blood from brain

Brings blood from brain and Ends up draining into IJV –> Jugualr forament

31
Q

WHat can be torn when you fracture the BASE OF THE SKULL

A

the Meninges! B/c DUra is very adherant to base of skull, allows CSF to escape to various places in skull

Commonly through ears and nasal cavities

32
Q

What is the Sigmoid Sulcus

A

Big dura venous drainage structures for brain

Internal/External Connection

33
Q

What do surgeons need to break through in order to get to Pituitary gland?

A

Hypophyseal Fossa

34
Q

What doe sthe Anterior Cranial Fossae consist of

A

Frontal lobs of brain
Olfactory bulbs and trats
Cribiform foramina

35
Q

What is in Middle Fossa

A

Butterfly

Temporal lobes fo brain
Pituitary gland
Foramina Rotundum
Foramina Ovale
Foramina Spinosum
Superior Orbital Fissures
Optic Canals
36
Q

What is in the Posterior Cranial Fossa

A 
Midbrain
Pons
Meduall of brain stem
Cerebellum
Foramen magnum
Jugular foramen
Internal Acoustic Meatus Hypoglossal Canal

Condylar Canal and Mastoid Foramen Des

37
Q

Describe what kind of bone Fontalles

A

Ossified
Developing bones will slide on each other
Humans can barely amke it thorugh birth canal

Areas in calvaia of new born infants where sutures do not meet and there is a gap between teh bones closed with mabranous tissue has not yet ossififed

38
Q

Bregma

A

Anterior Fontanelle

future site of Bregma

39
Q

Lambda

A

Posterior Fontanelle, future site of lamba

Anatomy Winter 2012 (12 decks)

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