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Flashcards in Paired Bones Deck (33)
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1

Paired bones

parietal
temporal
nasal
zygomatic
maxilla
palatine
lacrimal
inferior nasal conchae

2

Paired bones motion in cranial flexion

rotate externally

3

paired bones motion in cranial extension

rotate internally

4

parietal bone articulations

5 bones
occiput
frontal
sphenoid
temporal
opposite parietal

5

Bregma

old anterior fontanelle
edge of frontal and parietals

6

lambda

old posterior fontanelle
edge of occipital and parietals

7

Pterion

union of 4 bones
parietal
temporal
frontal
sphenoid

8

asterion

union of 3 bones
occipital
temporal
parietal
old mastoid fontanelle

9

Parietal landmarks outer

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

10

Parietal landmarks inner

saggittal sulcus
groove of MMA
groove for transverse sinus

11

Parietal axis of motion

two AP axes

12

Pariental flexion

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

13

pariental extention

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

14

Parietal Bone SD

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

15

Sagittal Synostosis

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

16

Lambdoid synostosis

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

Squamous portion of temporal bone contains

zygomatic process

18

petrous portion of temporal bone contains

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

19

Temporal bone sutures

parietosquamous
sphenosquamous
parietomastoid
temporozygomatic
occipitomastoid
TMJ

20

Muscular attachments to temporal

longissimus capitis
splenius
diagastric
sternocleidomastoid
stylohyoid
syloglossus
masseter

21

Temporal eustachian tube

internal rotation - compression and high-pitched tinnitus
external rotation - low pitched tinnitus

22

Temporal bone motion

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

23

Temporal bone external rotation

With SBS flexion
MP moves medially
Squamous portion moves laterally

24

Temporal bone internal rotation

With SBS extension
MP moves laterally
squamous portion move medially

25

Signs and symptoms of temporal bone SD

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

26

Frontal bone articulation

7 bones
parietals
sphenoid
zygoma
lacrimals
ethmoid
maxillae
nasals

27

frontal bone axis

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

28

frontal bone motion

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

frontal bone external rotation

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

30

frontal bone internal rotation

lateral side moves posterior/medial and slightly superior
glabella moves anteriorly