page 48-57 Flashcards
superficial insertion of masseter
angle of mandible
lateral ramus
deep insertion of masseter
superficial origin of masseter
zyg process of maxilla and ant 2/3 zyg arch
zyg arch(inner post 1/3)
deep origin of masseter
action is elevation ,retrusion,
ips excursion
masseter and temporalis
retrusion of deep and post fibers
masseter
elevation of ant and sup fibers
temporalis
retrusion of post fibers
temporalis
origin; temporalis
curvilinear lower temporal line
insertion is medial coronoid and ant ramus
temporalis
origin is temporal fossa and fascia
temporalis m.
origin is medial side of lat pterygoid plate
Medial pterygoid
insertion; medial side of mand angle
medial pterygoid
action is elevation, protrusion ,contrala. excursion
M. pterygoid
sup. origin of lateral pterygoid
> wing of sphenoid bone
inf origin of lat pterygoid
lat side of lat ptarygoid plate
sup insertion of lat pterygoid
art. capsule and disc
inf insertion of lat pterygoid
ant condylar kneck
action;lat perygoid
protrusion depression and contralat excursion
opening of mandible
lat pterygoid
suprahyoid
infrahyoid
temporalis
masseter
medial pterygoid
closing mandible
M and L pterygoid
protrusion
deep masseter
temporalis
retrusion
M and L pterygoid
excursion
TMJ
bilat synovial joint
tf upper compartment of TMJ is for rotation
F for translation and lower is for rotation
art capsule surround joint with — internally
synovium
condyle of mandible
elliptical shape with ML orientation
post condyle
round and convex
AI aspect of condyle
concave
glenoid/ mandibular fossa
concave
art eminence
ant part of glenoid fossa
convex
dense fibrocartiledge
joing the glenoid fossa and condyle
art disc
b/n articular surface of condyle and mand fossa
fibrocart biconcave disc
art disc
attach peripherally to capsule and ant to lat pterygoid
art disc
attach M and L poles of condyle via collateral lig
tf post band of art disc is continuous with post attachment tissues
T
vasc and inervated
art capsule
fibrous capsule surround TMJ
S attachment to glenoid fossa
art capsule
attach inf to condylar neck
art capsule
line internal surface of joint capsule
synovium
synovium
sec synovial fluid for joint lubrication
tf synoviium covers art surface or art disc
F doesnt
nerves of TMJ
only sensory info
auriculotemp nerve
prim. innervation of TMJ
transmits pain in capsule and periphary of disc
auriculotemporal nerve
provide PS to parotid gland via < pet nerve
auriculotemporal nerve
nerve to masseter of V3
sens fibvers to ant part of TMJ
post deep temporal nerve of V3
ant part of TMJ
TMJ lig outer oblique
prevent post and inf displacement
TMJ lig inner horizontal part
prevent lat or mesial displacement
remnant of meckels cart
ass lig.
connect styloid process to mand angle
stylomand lig
sphenomand lig
thick fibrous band connecting spinf of sphenoid with lingula of mandible
dislocated ant
TMJ
luxation of TMJ
assistance for reduction
sublaxation
auto reduces
TMJ disc placement
anteromedially
what happens in TMJ disc placement
coll lig loosen of tear. lat pterygoid pull disc anteromedially
ass with osteoarth of condyle
Crepitus
with self reducing sublaxation of condyle
dull thud
disc clicks over ant moving condyle
opneing of tMJ wth ant disc displacement
second click hapens
after opening
condyle move post past disc
closing of condyle
10 mm
protrusive and lateral range of mandible
50mm
opening of TMJ
translation occurs
with large movement
sliding occurs outside of mand fossa
atlas
C1
axis
C2(dens or odontoid process)
no vertebral bdy
C1
passage of vert body
transverse foramen
occ condyle and C1 sup facet
AO joint
flex and extend
AO joint
C1 inf facet with C2 sup facet
AA joint
(no head shake)
pretracheal layer
esoph
larynx
pharynx
thyroid gland
cut nerve
blood lymp
fat platysma
subcut tissue
vert and deep cerv muscles
prevert layer
subcut tissue
cut nerve blood lymph
fat platysma
deep cervical fascia
investing layer
SCM
trapezius
Submand gland
parotid gland
platysma
cerv br of CN7
blends with orb oris
sup to deep cerv fascia
platysma
superior portio of investing layer of deep cerv fascia
sup nuchal line
mastoid process
zyg arches
inf border of mandible
hyoid bone
spinous process of cerv vertebrae
sup and deep layers to invest trapezius and SCM
deep cerv fascia
enclose submand gland
deep cervical fascia
form fibrous capsule of paroid gland
investing layer of deep cervical fascia
manubrium
clavicle
acromions
spines of scapule
investing layer of deep cerv fascia
pretracheal layer
hyoid to thorax
thing muscular layer enveloping infrahyoid m.
pretracheal layer
visceral layer
thyorid gland
trachea
esophogus
blends lat with carotid sheath
Pretracheal layer
visceral alyer of pretracheal layer
continuous with buccopharyngeal fascia
carotid sheath
base of cranium to root of kneck
carotid sheath
blends with investing and pretracheal fascia ant
blends with prevert fascia post
carotid sheath
contents of carotid sheath
Common carotid artery
IJV
CN10
LN , carotid sinus nerve ,sym. nerve
Prevertebral Layer
investing layer of both side of lat neck and splits to enclose thyroid
superiorly attaches to laryngel acartieldges
prevert cartiledge
inferiorly fuses with perichondrium
prevert layer
fuses with ant long lig
prevert layer
retropharyngeal space
b/n pharynx and prevert fascia
comm. with mediastinum
retropharyngeal space
