INFRATEMPORAL AND PTERYGOPALATINE FOSSA Flashcards
Medial wall of the infra temporal fossa
Lateral plate of the pterygoid process of the sphenoid
Lateral wall of the infra temporal fossa
Medial surface of the ramus of the mandible
Anterior wall of the infra temporal fossa
Posterior surface of the maxilla
Roof of the infra temporal fossa
Formed by the inferior surface of the greater wing of the sphenoid and temporal bone.
What are the two clinical relevance aspects of the infratemporal and pterygopalatine fossa
Posterior epitaxis and greater palatine nerve block
What forms the door to the pterygopalatine fossa
The lateral pterygoid plate of the sphenoid bone
What forms the TMJ
Condylar part of the manidble and mandibular fossa
What ligaments stabalise the TMJ
Lateral ligament, sphenomandibular ligament, stylomandibular ligament
What kind of joint is the TMJ
Atypical synovial joint- disc within joint capsule
Muscles of mastication
Lateral and medial pterygoid, masseter, temporalis
What muscles are in charge of elevating the jaw
temporalis, masseter and medial pterygoid
what muscles protrude the jaw
lateral and medial pterygoid
what muscles retract the jaw
temporalis, masseter, geniohyiod and digastric
what muscles depress the jaw
gravity, geniohyoid, mylohyoid, digastric
what nerve innervates the muscles of mastication
mandibular v three
lateral wall of itf
lateral ramus of the mandible
roof of itf
temporal bone and sphenoid bone
medial wall of itf
lateral pterygoid plate of the sphenoid
anterior wall of itf
posterior surface of the maxilla
posterior wall of itf
carotid sheath
floor of itf
medial pterygoid muscle
What are the contents of the itf
pterygoid muscles, sphenomandibular ligament, middle menagial artery, inferior alveloar artery, mandibular nerve, pterygoid plexus
two branches of the maxillary artery we need to know
middle menangial, inferior alveolar
what are the branches of the posterior trunk of the mandibular nerve
auricular temporal nerve, lingual nerve, and chorda tympani, inferior alveolar nerve… incisive nerve and mental nerve
what gives sensation to the anterior two thirds of the tongue
lingual nerve and chorda tympani
what nerve gives parasympathetic supply to the parotid gland
lesser petrosal via auricular temporal
what are the openings into the pterygoidpalatine fossa we need to know about
foramen rontundum, inferior orbital fissure, sphenopalatine foramen, nasal cavity
where does posterior epitaxis come
sphenopalatine artery
what neuro structure in pterygoid palatine fossa
pteryopalatine ganglion–>hayfever ganglion–> parasympathetic from greater petrosal
