TMJ Flashcards
Temporalis
Temporal Fossa
Coronoid process and ramus of mandible
Elevates and retracts mandible
Mandibular Nerve
Medial Pterygoid
Lateral pterygoid plate
Medial surface of mandibular ramus
Elevates and protracts mandible
Small lateral chewing
Mandibular Nerve
Lateral pterygoid
Lateral Pterygoid plate
TMJ capsule and disc, and condyloid process of mandible
Protracts and depresses mandible
Large lateral chewing movements
Mandibular Nerve
Masseter
Zygomatic arch
Angle and Ramus of mandible
Elevates mandible
Mandibular Nerve
Lateral Ligament of TMJ
Thickening of TMJ capsule
Prevents posterior dislocation
Stylomandibular ligament
Thickening of capsule of parotid gland
Sphenomandibular ligament
Primary passive support of TMJ
What type of joint is the TMJ
Modified hinge joint
What movement does the TMJ allow
Flexion, extension
Rotation
Translation
What does the head of the mandible articulate with ?
Mandibular Fossa (mouth closed)
Articular tubercle of the temporal bone (when mouth is open)
Purpose of Post-Glenoid tubercle
Prevent posterior dislocation
What Nerve May be impacted upon with TMJ dislocation
Auriculotemporal nerve, Mandibular nerve and inferior alveolar Nerve (CNV 3)
Mandibular protraction on the left and retraction on the what occurs during what movement ?
Chin moving laterally to the right
Which way does the TMJ usually dislocate
Anteriorly (also slightly shifts medial)
How would a bilateral dislocation of the TMJ occur ?
Opening mouth too wide
What symptoms will result from jaw dislocation
Open locked jaw
Sharp pain in ear and teeth
Sensory loss in those areas
Referred pain to shoulder and neck
What artery supplied the TMJ
Deep Auricular
Name the intrinsic muscle group of the tongue
Superior longitudinal
Transverse
Vertical
Inferior longitudinal
What are the extrinsic muscles of the tongue
Styloglossus
Hyoglossus
Genioglossus
Palatoglossus
What Nerve innervates motor control over the tongue ?
Hypoglossal Nerve
Except Palatoglossus - Vagus Nerve
What Nerve innervates general sensory of the anterior 2/3 of tongue
Lingual Nerve (CNV3)
What Nerve innervates special sensory of anterior 2/3 of tongue
Chorda Tympani (CNV Vii)
What Nerve innervates general and special sensory of the posterior 1/3 of the tongue
Glossopharyngeal Nerve
What Nerve innervates a small portion of the posterior 1/3 of the tongue
Internal laryngeal Nerve (CN X)
How common is cleft lip ?
1 in 1000 births
More common in males
What is Cleft Lip
Tissue of upper lip fails to fuse
