Anatomy 1.11.13 Fosae

Question 1

What are the three fossae we talk about

Answer 1

Temporal Fossae

Infratemporal fossae

Pterygopalatine Fossa

Question 2

What are the obejctives

Answer 2

1. Describe boundaries of each fossae
2. Describe communicationg between fossae nad structures
3. Describe structures within each fossa

Question 3

What muscle is in temporal fossa

Answer 3

Temporalis muslce

Question 4

Where does temporalis muscle go down do

Answer 4

to zygomatic arch

Question 5

What is special about temporal fossa

Answer 5

It is not a real depe fossa,

Allows temporalis muscle to bulge, skull is open

Question 6

What is the superior temporal line? What attaches to it

Answer 6

raised area,

Goes from frontal bone, parietal bone, continuous with superior border of zygomatic arch ,to posterior of zygomatic bone`

Attachment of temporalis fascia

Question 7

What is the inferior temporal line? What is it the orgin of?

Answer 7

Outer border of origin of temporalis muscle

Question 8

Where do superior and inferior temporalis lines merge?

Answer 8

Merge and become continuous with superior margin of zygomatic arch

Question 9

What is the origin and insertion of temporalis muscle?

Answer 9

Originates form floor of temporal fossa

Insertes into CORONOID PROCESS and RAMUS of mandible

Question 10

What is the lateral boundary of the INFRATEMPORAL FOSSA

Answer 10

Ramus of the mandible (vertical part ))

Question 11

What muscle needs to be cut in order to see the infratemporal fossa/

Answer 11

need to cut zygomatic arch and temporalis muscle needs to be reflected upward

Also need to cut masseter muscle

Question 12

how does infratemporal fossal communicate with temproal fossa?

Answer 12

via passage deep to zygomatic arch

Question 13

What is the Roof, Anterior, Medial, Posterior , inferior,boundary

Answer 13

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,

Question 14

What comes out of foramen spinosum

Answer 14

Middle Meningeal Artery

Question 15

What comes out of Foramen ovale

Answer 15

1. V3 - Mandibublar Nerve (a branch of TRIGEMNIAL NERVE CN V)

Question 16

What comes out of inferior orbital Fissure

Answer 16

Infraorbital Artery and nerve

Question 17

What coes out of pterygomaxillary fissure

Answer 17

Maxillary artery

Question 18

What are the boundaries of the infratemporal fossa

Answer 18

1. Mandibular ramus (lateral boundary
2. Floor of Middle Cranial Fossa (superior boundary)
3. Pharynx (medial boundary)

Question 19

What are branches of external carotid bifurcating end

Answer 19

Superficial Temporal Artery (to scalp)
Maxillary artery (infratemporal artery)

Question 20

What muscle is Maxillary artery anteriorto to

Answer 20

lateral Pterygoid muscle

Question 21

Which artery supplies temporalis muscle

Answer 21

Deep temporalis arteries

Question 22

What does inferiora lveolar artery supply

Answer 22

mandible, teeth, gums, chin (mental artery)

Question 23

What does lingual branch of inferior alveolar artery supply

Answer 23

Buccal Mucuous membranes

Question 24

What does posteiro superior alveolar artery supply

Answer 24

molar and premolar teeth of upper jaw, gums, and maxillary sinus

Question 25

What does buccal artery supply,

Answer 25

buccinator muscle and mucosa of cheek

Question 26

What does accessory meningeal artery supply

Answer 26

dura and medial and lateral pterygoid uscles

Question 27

Which foramen does accessory meningeal artery go through

Answer 27

enters foramen ovale

Question 28

What foramen does middle meningeal artery enter?

Answer 28

Foramen spinosum

Question 29

What does foramen spinsoum supply

Answer 29

large protion fo dura, skull, facial nerve,geniculate ganglion, tirgeminal ganglion, middl eear and structures within

Question 30

What does infraorbital artery supply

Answer 30

upper teeth and gums, palate and parts of nose, branches exiting infraortibal formaen supply the lower eyeline, cheek, lacrimacal sac, upper lip

Question 31

What fossa does maxillary artery go through

Answer 31

pterygopalatine fossa

Question 32

What formaen does spehnopalatine artery enter? (branch of maxillary)

Answer 32

Sphenopalatine foramen

Question 33

Middle meningeal artery travels in between 2 branches of which nerve

Answer 33

Auriculotemporal nerve

Question 34

what does sphenopalatine artery suppply

Answer 34

supplies mucosea of conchae, meatueses, paranasal sinueses-- major nose bleed artery

Question 35

which artery is responsbile for nose bleeds when tehre is trauma to nose

Answer 35

Spehnopalatine artery! (branch of maxillary arterY

Question 36

What membrane does chordi tympani pass through?

Answer 36

Tympanic membrane

Question 37

What nerve does chordi tympani joing

Answer 37

Lingual nerve `

Question 38

What foramen does mandibular nerve pass though

Answer 38

Foramen ovale

Question 39

Whch nerve passes between superior and inferior heads of lateral pterygoid musclse

Answer 39

Buccal Nerve

Question 40

How des the pterygopalatine fossa communicate with infratemporal fossa and orbit

Answer 40

via infraorbital fissure

Question 41

What artery and nerve does pterygopaltaine fossa hve

Answer 41

Maxillary artery and nerve and the pterygopalatine ganglion