Lecture 3- Temporal Fossa Infratemporal fossa Flashcards
what nerve innervates the temporalis and masseter
trigeminal V3
styloid process and mastoid process are part of which bone
temporal bone
what four muscles attach to the mastoid process
digastric, SCM, splenius capitus, longissimus capitus
what is in the temporal fossa
temporalis muscle
maxillary nerve v2
middle temporal artery
which bones can affect the TMJ?
-greater wing of sphenoid bone
-squamous part of temporal bone
-supramastoid crest
-external acoustic meatus
muscles of mastication
-masseter
-temporalis
-medial pterygoid
-lateral pterygoid
masseter superficial part AOI
O: zygomatic arch
I: mandibular angle
N: trigeminal V3
A: elevates and protrudes mandible
masseter deep part AOI
O: zygomatic arch
I: mandibular angle
N: trigeminal V3
A: elevates and protrudes mandible
temporalis
O: temporal fossa
I: coronoid process of mandible
N: trigeminal V3
A: elevate mandible; retract mandible; lateral movement of mandible
which bones does the temporalis attach to
frontal, parietal, temporal, sphenoid, mastoid
which pterygoid closes the mouth
medial
which pterygoid opens the mouth
lateral
which muscles help with protrusion
lateral pterygoid assisted by medial pterygoid
which muscles help with retraction
posterior fibers of temporalis, deep masseter, geniohyoid, and digastric
which muscles help with elevation
temporalis, masseter, medial pterygoid
which muscles help with depression
lateral pterygoid, digastric, geniohyoid, mylohyoid
which 3 ligaments help support the TMJ
lateral ligament
sphenomandibular
stylomandibular
what does the V3 have sensory to
teeth, gingivae of mandible
2/3 tongue
lower lip
skin over temple and lower face
which part of the trigeminal nerve does both sensory and motor
V3
which nerve exits anterior and slightly inferior to the ear?
facial nerve
