temporal and infratemporal region part 4
TRANSCRIPT
HeadandNeckTemporalandInfratemporalregionspartIV
MaxillaryArteryandtempromandibularjoint
Dr.MohamedElFikyProfessorofAnatomyandembryology
MaxillaryArteryOrigin:IsthelargerofthetwoterminalbranchesoftheexternalcaroEdartery.Arisesbehindtheneckofthe
mandiblewithinthe,substanceofTheparoEdgland.Courseandrela5ons:fordescripEvepurpose
theartery isdivided into threepartsby thelateralpterygoidmuscle.(1) The first part: runs horizontally first
between the neck of the mandible and thesphenomandibular ligament. and thenalong
thelowerborderofthelateralptrygoid.(2) The second part: runs upwards and
forwards either superficial or deep to thelowerheadofthelateralpterygoid.(3) The third part:passes between the two
heads of the lateral pterygoid and throughthe pterygomaxillary fissure to enter thepterygopalaEnefossa.
ExternalCaroEdArtery
MaxillaryArtery
LateralPterygoid
SphenomandibularLigament
MedialPterygoidMuscle
MaxillaryArtery
MaxillaryArtery
SphenomandibularLigament
NeckoftheMandible
DeepHeadofMedialPterygoid
BranchesofMaxillaryArtery
3-Middllemeningeal
4-Accessorymeningeal
1-Deepauricular2-Anteriortympanic
5-Inferioralveolar
1-BranchesofTheFirstPart
Inferioralveolarartery
MandibularForamen
MentalArtery
MylohyoidArtery
MylohyoidMuscle(MylohyoidDiaphragm)
MylohyoidArteryandNerve
1-Deeptemporal
2-Pterygoidarteies
3-Massetericartery4-Buccalartery
2-BranchesofTheSecondPart
2-Posteriorsuperioralveolar
1-DescendingpalaEne
3-SphenopalaEne4-ArteryofPterygoidcanal
5-Pharyngealartery
6-Infraorbitalartery
LesserPalaEne
GreaterPalaEne
3-BranchesofTheThirdPart
Pterygoidplexusofveins
MaxillaryVein
SuperficialTemporalVein
RetromandibularVein
MaxillaryVeinandPterygoidPlexusofVeins
PterygoidPlexusofVeinsMaxillaryVein
SuperficialTemporalVein
RetromandibularVein
PterygoidPlexusofVeins
1-AnteriorFacialVein
2-CavernousSinus3-InferiorOphthalmicVein
4-ToPharyngealPlexusofVeins
DeepFacialVein
Communica5onsofPterygoidPlexusofVeins
MandibularFossaArEcularEminence
HeadofTheMandible
Type:Condylarvarietyofsynovialjoint.Ar5cularsurfaces:(A)Fromabove:(1)arEculartubercle(eminence);and(2)mandibularfossa.(B)Frombelow:headofmandible.Capsule:Isa\achedtothemarginsofthearEcularsurfaces.(A)Above:tothearEculartubercleandthecircumference.ofmandibularfossa.(B)Below:totheneckofthemandible.Synovialmembrane:Linesthecapsuleandtheneckofthemandible.
TypeandArEcularSurfaces
Intra-arEcularDisc
SynovialSaddleVariety
CondylarSaddleVariety
Ar5culardisc
*IsanovalplateoffibrousEssuethatdividesthejointintoupperandlowercompartments.*ItsuppersurfaceisconcavoconvextofitthearEculartubercleandthemandibularfossa.*Itslowersurfaceisconcavetofitintotheheadofthemandible.*Isa\achedbyitscircumferencetotheinnersurfaceofthecapsule.
1-LateralTemporomandibular
2-TheSphenomandibularLigament
3-TheStylomandibularLigament
4-PterygomandibularLigament
AccessoryLigamentsofTMJ1-LateralTemporomandibular2-TheSphenomandibularLigament3-TheStylomandibularLigament4-PterygomandibularLigament
Buccinator
Superiorconstrictor
Pterygomandibularligament
MaxillaryArtery
SuperficialTemporalArtery
BloodSupplyofTMJ
AuriculotemporalNerve
FromNervesToMusclesofMasEcaEon
NerveSupplyofTMJ
1-PosiEonatRest
1-slightintervalbetweenupperandlowerteeth2-Lowerteethlieslightlybehindtheleveloftheupperteeth.
Movements2-OcclusalPosiEon
3-ProtracEonofTheMandible
ByLateralandMedialPterygoidMusclesAndmasseter
4-RetracEonofTheMandible
ByPosteriorFibersofTemporalis,DigastricandGeniohyoidMuscles
Movements
5-DepressionofTheMandible(OpeningoftheMouth)
ByLateralPterygoid,Platysma,Digastric,MylohyoidandGeniohyoidMuscles
Movements6-ElevaEonofTheMandible(ClosureoftheMouth)
ByTemporalis,MasseterandMedialPterygoid
7-SidetoSideMovementofTheMandible(Grinding)(Chewing)
ByLateralandMedialPterygoidMuscles
Movements
AnteriorDislocaEonofTheMandible
Disloca5on
DislocaEonofTemporomandibularJoint
Thank You