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OS IV > Paired Bones > Flashcards

Paired Bones Flashcards

1
Q

Paired bones

A 
parietal
temporal
nasal
zygomatic
maxilla
palatine
lacrimal
inferior nasal conchae
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2
Q

Paired bones motion in cranial flexion

A

rotate externally

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3
Q

paired bones motion in cranial extension

A

rotate internally

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4
Q

parietal bone articulations

A 
5 bones
occiput
frontal
sphenoid
temporal
opposite parietal
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5
Q

Bregma

A

old anterior fontanelle

edge of frontal and parietals

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6
Q

lambda

A

old posterior fontanelle

edge of occipital and parietals

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7
Q

Pterion

A 
union of 4 bones
parietal
temporal
frontal
sphenoid
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8
Q

asterion

A 
union of 3 bones
occipital
temporal
parietal
old mastoid fontanelle
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9
Q

Parietal landmarks outer

A

upper temporal ridge - attachment of the temporal fascia
lower temporal ridge - origin of the temporalis muscle
temporalis fossae - filled by the temporal muscle

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10
Q

Parietal landmarks inner

A

saggittal sulcus
groove of MMA
groove for transverse sinus

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11
Q

Parietal axis of motion

A

two AP axes

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12
Q

Pariental flexion

A

external rotation
sagittal articulation moves inferiorly
temporal articulation moves laterally
cranium widens laterally

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13
Q

pariental extention

A

internal rotation
sagittal articulation moves superiorly
temporal articulation moves medially
cranium narrows laterally

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14
Q

Parietal Bone SD

A

Head Pain - tension headaches
temporal headaches
head, face, and tooth pain
MMA

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15
Q

Sagittal Synostosis

A

most common form of synostosis
premature fusion of the sagittal suture
increased A and P growth

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16
Q

Lambdoid synostosis

A

most commonly mistaken for posterior positional deformational plagiocephaly
results in flattening of the back fo the head of the affected side and ipsilateral compensatory growth of the mastoid
leads to characteristic tilt in the cranial base
ear on affected side of deviated posteriorly

17
Q

Squamous portion of temporal bone contains

A

zygomatic process

18
Q

petrous portion of temporal bone contains

A 
otovestibular organ
eustachian tube exit
border of foramen lacerum
attachment of tentorium
internal carotid artery
jugular foramen
styloid process
19
Q

Temporal bone sutures

A 
parietosquamous
sphenosquamous
parietomastoid
temporozygomatic
occipitomastoid
TMJ
20
Q

Muscular attachments to temporal

A 
longissimus capitis
splenius
diagastric
sternocleidomastoid
stylohyoid
syloglossus
masseter
21
Q

Temporal eustachian tube

A

internal rotation - compression and high-pitched tinnitus

external rotation - low pitched tinnitus

22
Q

Temporal bone motion

A

oblique axis just inferior to petrous ridge
internal rotation with SBS extension
external rotation with SBS flexion

23
Q

Temporal bone external rotation

A

With SBS flexion
MP moves medially
Squamous portion moves laterally

24
Q

Temporal bone internal rotation

A

With SBS extension
MP moves laterally
squamous portion move medially

25
Q

Signs and symptoms of temporal bone SD

A 
TMJ pain
Head pain - occiptomastoid and asterion
neck pain
dizziness
ear infections
swallowing and chewing
tinnitius and eustachian tube dysfunction
Bells palsy association
26
Q

Frontal bone articulation

A 
7 bones
parietals
sphenoid
zygoma
lacrimals
ethmoid
maxillae
nasals
27
Q

frontal bone axis

A

2 vertical axes
transverse palne motion
metopic has hinge-like motion around axes

28
Q

frontal bone motion

A

external rotation - lateral side moves anterior/lateral and slightly inferior, glabella moves posteriorly
internal rotation - lateral side moves posterior/medial and slightly superior, glabella moves anteriorly

29
Q

frontal bone external rotation

A

sphenoid moves the frontal during external rotation
lateral side moves anterior/lateral and slightly inferior
glabella moves posteriorly

30
Q

frontal bone internal rotation

A

lateral side moves posterior/medial and slightly superior

glabella moves anteriorly

31
Q

Signs and symptoms of frontal bone SD

A 
focal head pain - coronal
global head pain
frontalis muscle
sinusitis
visual problems
anosmia
32
Q

Bicoronal synostosis

A

restriction of growth of the anterior fossa results in a shorter and wider shape - brachycephaly
compensatory vertical growth - turricephaly
associated with syndromes liek Apert, Crouzon, Muenke, and Pfeiffer

33
Q

Unicoronal Synostosis

A

leads to a head shape called anterior plagiocephaly
face has a characteristic C-shape or facial twist
base of nose is drawn towards the affected side
affected forehead is flat and contralateral more anterior

OS IV (9 decks)

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