GA: Deep Face/Infratemporal Fossa Flashcards
Where is the temporal fossa vs the infratemporal fossa?
Separated by zygomatic arch
Temporal Fossa bones
Infratemporal Fossa bones
What is in the infratemporal fossa?
Everything in that space that commes off the maxillary A.
What nerves does V3 (Mandibular N. running w/ maxillary A.)give off?
Buccal
Lingual
Inferoir Alveolar
Auriculotemporal
What nerve innervates the muscles of mastication?
-Temporalis, Masseter, Lateral Pterygoid, Medial Pterygoid
Mandibular (V3)
What ganglion can you see in the infratemporal fossa?
Otic ganglion
What branches does facial nerve give off?
Chorda tympani + Greater petrosal N.
If you fractiure these things what could get severed?
Neck:
Ramus:
Corpus:
Neck: maxillary A. branches
Ramus: Inferior Alveolar Structures
What is the function of temporalis + masseters M.’s (specific)?
Elevate + Retract the mandible
What is the function of the lateral + medial pterygoid’s (specific)?
Give you that side to side grinding motion
What muscles open the mandible ?
Suprahyoid M.’s: Diagastric, Geniohyoid, Mylohyoid, Stylohyoid
+
Infrahyoid M.’s: Sternohyoid, Sternothyroid, Thyrohyoid, Omohyoid
What ligaments comprise the Temperomandibular Joint (TMJ)?
Lateral (temporalmandibular) L.
Stylomandibular L.
What is the purpose of the sphenomandibular L. + stylomandibular L. @ the TMJ joint?
Both ligaments limit inferior excursion at TMJ
What happens when you open your mouth more than 15 degrees?
You disloacte the TMJ joint
How do you preform an inferior alveolar nerve block?
How do you preform an infraorbital nerve block?
