Temporal Region Flashcards
What is the site of articulation of the mandible with the skull
Mandibular fossa
Condylar process is held in place by
Postgelnoid tubercle
Articular eminence
What 2 ligaments prevents posterior dislocation of the TMJ joint
Temporomandibular ligament and plostgelnoid tubercle
What is suspended by the 3 TMJ ligaments
Articular capsule
Superior compartment of TMJ is responsible for
A-P translation
Inferior compartment of TMJ is responsible for
Hinge-like motion
What muscle provides the main protrusvie and depressive force on the jaw
Lateral pterygoid
What muscle provides the main retrusive force on the jaw
Temporalis
Function of medial pterygoid muscle
Closes jaw and provides some protrusive force
What is the main muscle of jaw closing
Masseter
All the muscles of mastication are innervated by
V3 (mandibular division of trigemnial)
Main muscles for elevation of the jaw
Temporalis
Masseter
Medial pterygoid
Main muscles for depression of jaw
Gravity
Lateral pteryoid (inferior head)
Anterior belly of digastric
Main muscles for protrusion of jaw
Lateral pterygoid
Masseter (superficial fibers)
Medial pterygoid
Main muscles for retrusion of the jaw
Temporalis (posterior fibers)
Anterior belly of digastric
Main muscles for lateral excursion of jaw
Unilateral contraction of:
Temporalis Masseter Medial pterygoid Lateral pteryoid Anterior belly of digastric
Contents of infratemporal fossa
Mandibular nerve + branches (V3)
SA and VE structures and fibers
Maxillary artery + branches
Pterygoid venous plexus
One branch of the facial nerve
Medial and lateral pterygoid muscles
Sphenomandibular ligament
V3 supplies general efferents to:
Masseter
Temporalis
Medial and lateral pterygoids
Anterior belly of digastric
Mylohyoid
Tensor veli palatini
Tensor tympani
The auriculotemporal nerve spits around the
middle meningial artery
Inferior alveolar nerve exits through
Mandibular canal –> mental foramen
Maxillary artery originates in the __ and passes between ___ and ___
Originates in the parotid gland
Passes between the neck of the mandible and sphenomandibular ligament
Pterygoid venous plexus receives blood from
Regions supplied by the maxillary artery
Pterygoid venous plexus flows into
Short maxillary vein –> retromandibular vein
Pterogoid venous plexus connects with facial vein via
Deep facial vein
