*Type.Articulating bonesCapsuleSynovial membraneArticular discLigaments.Movements.

*Type :- synovial,condylar.Articulating bones :-articular surfaces are covered by fibro-cartilage.Mandibular headMandibular fossa &tubercle

Types of Joints:Synovial

*Capsule of TMJLateral pterygoid muscleArticular disc

The lateral tempromandibular ligamentLateral tempromandibular ligamentcapsuleSphenomandibualr ligamentStylomandibualr ligamentLigaments

Anteriorposterior

*Medial aspect of TMJSphenomandibular LigamentInf.alveolar N.&Vs.Maxillary A.Auriculotemporal nerve

Articulation1. above : the articular tubercle and the mandibular fossa of the temporal bone2. below : the head (condyloid process) of the mandibleType: synovialEnumerate ligamentThe lateral temporomandibular ligament, The sphenomandibular ligament , The stylomandibular ligament Nerve supply: Auriculotemporal and masseteric branches of the mandibular nerve

Origin: greater wing of sphenoid and lateral ptrygoid plateInsertion: neck of the mandible and articular discNerve supply: mandibular nerveAction: pull neck of mandible forward

All muscles of mastication innervated by mandibular nerve

Protrusion of the mandible is brought about by contraction of the.Lateral pterygoid muscleTemporalis muscleMasseter muscleSuprahyoid muscleThe Chewing movement of the mandible is brought about by contraction of the.Lateral and medial pterygoid musclesTemporalis muscleMasseter muscleSuprahyoid musclethe medial ptrygoid muscle ----------- the mandibleProtrudeRetractDepressElevate

the lateral ptrygoid muscle ----------- the mandibleProtrudeRetractDepressElevatethe posterior fibers of temporalis muscle ----------- the mandibleProtrudeRetractDepressElevatethe masseter muscle ----------- the mandibleProtrudeRetractDepressElevatethe digastric and geniohyoid muscles ----------- the mandibleProtrudeRetractDepressElevate

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