Anatomy 1.11.13 Fosae Flashcards
What are the three fossae we talk about
Temporal Fossae
Infratemporal fossae
Pterygopalatine Fossa
What are the obejctives
- Describe boundaries of each fossae
- Describe communicationg between fossae nad structures
- Describe structures within each fossa
What muscle is in temporal fossa
Temporalis muslce
Where does temporalis muscle go down do
to zygomatic arch
What is special about temporal fossa
It is not a real depe fossa,
Allows temporalis muscle to bulge, skull is open
What is the superior temporal line? What attaches to it
raised area,
Goes from frontal bone, parietal bone, continuous with superior border of zygomatic arch ,to posterior of zygomatic bone`
Attachment of temporalis fascia
What is the inferior temporal line? What is it the orgin of?
Outer border of origin of temporalis muscle
Where do superior and inferior temporalis lines merge?
Merge and become continuous with superior margin of zygomatic arch
What is the origin and insertion of temporalis muscle?
Originates form floor of temporal fossa
Insertes into CORONOID PROCESS and RAMUS of mandible
What is the lateral boundary of the INFRATEMPORAL FOSSA
Ramus of the mandible (vertical part ))
What muscle needs to be cut in order to see the infratemporal fossa/
need to cut zygomatic arch and temporalis muscle needs to be reflected upward
Also need to cut masseter muscle
how does infratemporal fossal communicate with temproal fossa?
via passage deep to zygomatic arch
What is the Roof, Anterior, Medial, Posterior , inferior,boundary
Superior BorderRoof- a) Greater Wing of the Sphenoid Bone b) Temporal Bone (roof)
INferior- no floor, trap you form getting to mandlble but no boundary
Anterior Boundary- Maxillae
Medial Boundary -
a)Pterygoid plate Pterygoid muscle (attaches to insdie of mandible_/ b)PHARNYNX- PHARYNGEAL TUBERCLE (attachent of pharynx
Lateral boundary -Mandible?
Posterior boundary- not much barrier,
What comes out of foramen spinosum
Middle Meningeal Artery
What comes out of Foramen ovale
- V3 - Mandibublar Nerve (a branch of TRIGEMNIAL NERVE CN V)
What comes out of inferior orbital Fissure
Infraorbital Artery and nerve
What coes out of pterygomaxillary fissure
Maxillary artery
What are the boundaries of the infratemporal fossa
- Mandibular ramus (lateral boundary
- Floor of Middle Cranial Fossa (superior boundary)
- Pharynx (medial boundary)
What are branches of external carotid bifurcating end
Superficial Temporal Artery (to scalp) Maxillary artery (infratemporal artery)
What muscle is Maxillary artery anteriorto to
lateral Pterygoid muscle
Which artery supplies temporalis muscle
Deep temporalis arteries
What does inferiora lveolar artery supply
mandible, teeth, gums, chin (mental artery)
What does lingual branch of inferior alveolar artery supply
Buccal Mucuous membranes
What does posteiro superior alveolar artery supply
molar and premolar teeth of upper jaw, gums, and maxillary sinus
What does buccal artery supply,
buccinator muscle and mucosa of cheek
What does accessory meningeal artery supply
dura and medial and lateral pterygoid uscles
Which foramen does accessory meningeal artery go through
enters foramen ovale
What foramen does middle meningeal artery enter?
Foramen spinosum
What does foramen spinsoum supply
large protion fo dura, skull, facial nerve,geniculate ganglion, tirgeminal ganglion, middl eear and structures within
What does infraorbital artery supply
upper teeth and gums, palate and parts of nose, branches exiting infraortibal formaen supply the lower eyeline, cheek, lacrimacal sac, upper lip
What fossa does maxillary artery go through
pterygopalatine fossa
What formaen does spehnopalatine artery enter? (branch of maxillary)
Sphenopalatine foramen
Middle meningeal artery travels in between 2 branches of which nerve
Auriculotemporal nerve
what does sphenopalatine artery suppply
supplies mucosea of conchae, meatueses, paranasal sinueses– major nose bleed artery
which artery is responsbile for nose bleeds when tehre is trauma to nose
Spehnopalatine artery! (branch of maxillary arterY
What membrane does chordi tympani pass through?
Tympanic membrane
What nerve does chordi tympani joing
Lingual nerve `
What foramen does mandibular nerve pass though
Foramen ovale
Whch nerve passes between superior and inferior heads of lateral pterygoid musclse
Buccal Nerve
How des the pterygopalatine fossa communicate with infratemporal fossa and orbit
via infraorbital fissure
What artery and nerve does pterygopaltaine fossa hve
Maxillary artery and nerve and the pterygopalatine ganglion
