Anatomy theme 4 Flashcards
What is the superior border of the INFTF ?
the infratemporal surface of the greater wing of sphenoid
small part of the squamous of the temporal bone
What is the medial border of the INFTF ?
the lateral pterygoid plate
What is the lateral border of the IFTF ?
ramus and the cornoid process of the mandible
What is the anterior border of the INFTF ?
the posterior wall of the maxilla
What is the posterior border of the INFTF ?
styloid process
Where does the deep head of the medial pterygoid arise and insert ?
medial aspect of the lateral pterygoid plate
ramus of the mandible
Where does the superficial head of the medial pterygoid arise and insert ?
arises from the maxillary tuberosity
inserts into the ramus of the mandible - they fuse together (deep and superficial head)
Where does the inferior head of lateral pterygoid arise and insert ?
arises from the lateral aspect of the lateral pterygoid plate
inserts into the pterygoid fovea on the condylar neck
Where does the superior head of lateral pterygoid arise and insert ?
arises from the infratemporal surface of the greater wing of sphenoid and inserts into the pterygoid fovea
What is the innervation of lateral pterygoid ?
V3- nerve to lateral pterygoid
What is the innervation Of medial pterygoid ?
V3- nerve to medial pterygoid
What does medial pterygoid do ?
elevates the mandible
What does lateral pterygoid do ?
depresses the mandible in jaw opening
What characteristic of medial pterygoid allows it to move in vectors ?
its fibres are perpendicular to the molars
Wheres does V3 enter the INFTTF ?
fo. Ovale
What does V3 do after passing through the INFTF ?
divides into anterior and posterior divisions
What does the anterior division contain ?
nerves to the muscles of mastication
long buccal nerve (sensory)
What does the posterior division contain ?
lingual nerve
inferior alveolar nerve
auriculotemporal nerve
Where does the inferior alveolar nerve supply ?
below the roots of the mandibular teeth
What does the inferior alveolar nerve divide into ?
the inferior alveolar nerve splits into the nerve to mylohyoid before it enters the mandibular canal
it supplies the mandibular teeth then gives off the mental nerve anteriorly when it enters the mandibular canal
Where does the mental exit the skull ?
the mental foramen
What does the mental nerve provide sensory innervation for ?
the chin and the lower lip
Where does the auriculotemporal nerve pass ?
around the middle meningeal artery as two roots from the post division of the mandibular nerve
What does the auriculotemporal nerve provide sensory innervation to ?
the oracle and the TMJ