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Flashcards in Paired Bones Deck (57)
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1

paired bones of the cranial vault and temorals

frontals parietals and temporals
ROTATE EXTERNALLY during flexion

2

paired bones of the face

maxilla, palatines and zygomae
ROTATE EXTERNALLY during flexion

3

what bones does the parietal articulate with

1.occiput
2.frontal
3.sphenoid
4.temporal
5.opposite parietal

4

sutures of the parietal bone

bregma and lambda, asterion, pterion
parietosquamous, parietomastoid coronal lambdoidal

5

what is the only bone that contacts all four fontanelles

parietal bone

6

surface anatomical features of the parietal bones (3)

upper temporal ridge - temporal fascia attachment
lower temporal ridge - temporalis muscle origin
temporalis fossae - filled iwth temporal muscle

7

a groove along the inside of the sagittal suture in which the sagittal sinus runs

sagittal sulcus

8

interior anatomical features of parietal bones

sagittal sulcus
anterior and posterior groove for the middle meningeal artery
portion of groove for the Transverse sinus - carries marginal insertion of the tentorium cerebelli

9

parietal bone
inferior borders move laterally
superior borders move medial and inferior
pterion, asterion, squamous sutures move laterally
sagittal sutures move inferiorly

what is the motion of the SBS

sbs flexion - parietal bones externally rotate

10

parietal
sagittal articulation moves inferiorly
temporal articulation moves laterally
cranium widens

what motion?

external rotation of the parietal bones

11

mechanical and joint related pain of parietal bone SD

cranial syntosis - premature closing of the sutures
head pain - pain along the suture
OM & asterion - tension HA
pterion - temporal HA
parietosquamous

12

organ/myofascial dysfunction leading to parietal bone SD

middle meningeal a - truama, giant cell arthritis
head face and tooth pain - temporal SD

13

most common form of synostosis- premature fusion of which suture that restricts transverse growth of the skull

sagittal synostosis
sagittal suture

14

commonly mistaken for posterior postioning plagiocephaly
flattening of the back of the head and compensatory growth of the mastoid process on the ipsilateral side leads to characteristic tilt of cranial base

lambdoid synostosis

15

structures contained within the petrous portion of hte temporal bone

otovestibular organ
eustachian tube exits between the sphenoid and temporal bones
border of the foramen lacerum (with sphenoid)
attachment of the tentorium
encloses the internal carotid a
lateral part of the jugular foramen
styloid process

16

in a newborn skull, what portion of the temporal bone is missing

mastoid process

17

muscles that attach to the temporal bone

splenius
digastric
longissimus capitis
sternocleidomastoid
stylohyoid
styloglossus
masseter

18

internal rotation of the temporals will place pressure no the eustachian tube, resulting in what pitch of tinnitus/

high pitch tinnitus

19

external rotation of the temporals will often produce what pitch of tinnitus

low pitch tinnitus
low roaring sound i

20

where is the axis fo the temporal bone located

inferior to the petrous ridge

21

temporal
squamous portion moves laterally
MP moves medially

external rotation
paired with flexion

22

temporal
squamous portion moves medially
MP moves laterally
zygomatic process becomes more prominent

internal rotation
paired with flexion

23

what bone drives motion of the temporal

occiput
through OM artiuclation

24

wobbly wheel is what bone motion

temporal physiologic motion

25

mechanical signs and symptoms of temporal bone SD

TMJ pain
Head pain along a suture - OM and asterion - tension \ pterion - temporal - parietosquamous
neck pain - SCM and other muscles

26

organ/nerve/muscle signs and symptoms of temporal bone SD

dizziness
ear infections
swallowing and chewing - stylohyoid, stylomandibular, styloglossus
tinnitus and eustachian tube dsyfunction - IR with high pitch roar ER with low pitch roar
Bell's palsy - CNVII

27

why are the frontal bones considered paired?

because they start out as two bones in infancy
metopic suture is the remnant of the fusion of these bones, found in 10% of adults

28

what bones does the frontal bone articulate with

parietals
sphenoid
ethmoid
alcrimals
maxillae
nasals
zygoma

29

even though the frontal bone is fused, it still has movement as if

it is made of two bones

30

plane of movement of frontal bone

coronal plane motion
metopic has hinge like action