Infratemporal Fossa Anatomy

Front 1

at the mandibular angle, what are the two rough patches called?

akas for angle?

Back 1

interiorly - pterygoid tuberosity (internal pterygoid m.)
superficially - maseteric tuberosity (masseter m.)

aka gonion aka gonion angle

Front 2

depression in which the sumbandib gland lies

Back 2

submandibular fossa - underneat the mylohyoid line

Front 3

fossae on either side of the mylohyoid line

Back 3

submandib foss (inf)
sublingual foss (sup)

Front 4

name bony features of the chin

Back 4

outside - 2 mental tuberance, mental protuberance, symphisis menti
inside - mental spine, sup and inf genial tubercles

Front 5

when the two parts of the mandible fuse in embryonic dvlpment, what feature is formed

Back 5

symphisis midi - line on the chin

Front 6

this gland wraps around teh mylohyoid

Back 6

submandibular gland

Front 7

name the salivary glands

Back 7

3
sublingual in fossa with same name
submandib ditto
parotid - overlying mandibular ramus

Front 8

what are the boundaries of the infratemporal fossa?

Back 8

ant - infratemp surface of maxilla
post - mastoid and styloid processes
superior - infratemp crest of sphenoit to the zygomatic arch
lateral - inside of ramus
medial - lateral pterygoid plate

Front 9

this mastication muscle (4) lies outside the of the infratemporal fossa.

Back 9

masseter m.

Front 10

say you are stuck in teh infratemporal fossa. name 3 ways you can escape.

Back 10

mid cranial fossa via f. spin or f. ovale
pterygopalatine fossa - pterygopalatine fissure
orbit - inferior orbital fissure

Front 11

name 3 ligaments associated with the mandible (not TM joint)

Back 11

pterygomandibular rafe (betwn buccin and sup pharyng constrictor) - attchs post end of mylohyoid line
stylomandib ligament - styloid proc to gonion angle aka mandib angle
sphenomandibular ligament - sph spine to lingula

Front 12

What attaches to the lingula? aka?

Back 12

sphenomandib lig - sph spine to lingula
spine to spine ligament

Front 13

what is the innervation of the most powerful closer of the jaw?

other mandib innerv?

Back 13

mandibular n. innerv. temporalis

medial and lateral pterygoid

Front 14

what muscles form the mandibular sling?

Back 14

medial pterygoid m.
masseter m.

Front 15

Describe the insertion of teh lateral pterygoid m.

Back 15

upper head- attch to articular disk and joint capsule
lower head - attch to pterygoid fovea of condyle

Front 16

describe structure of TM joint

Back 16

in the mandibular fossa of temporal bone, synovial joint between mandible and temperol. joint capsule surrounds, articular disk between.

Front 17

what extrinsic ligaments attch mandible to cranium

Back 17

stylomandib lig
sphenomandib lig
(and lateral lig?) - at TM joint

Front 18

Muscles invlved in closing mouth? opening mouth?

Back 18

closing - temporalis, medial pterygoid, masseter m.
opening - lateral pterygoid, digastric m., infrahyoids

Front 19

What are the attachmnt points for the mastication muscles?

Back 19

temporalis
O - dfjk
I - coronoid process and ant border of mandible

masseter
O - zygomatic arch
I - meseteric tuberosity (mandible)

lateral pterygoid
O - infratemp surf maxilal
I - artic disk, joint capsule, pterygoid fovea

Medial pterygoid
O - infratem surf of maxilla
I - pterygoid tuberosity

Front 20

what is the insertion point of the accessory m. of mastication?

Back 20

buccinator
I - buccal shelf

Front 21

what are the sensory roots and motor roots of the trigeminal nerve called?

Back 21

portio major - sensory
portio minor - motor - to mouth

Front 22

T/F - motor root (aka?) of trig n. meets the sensory root (aka?) at the trigeminal ganglion (aka?)

Back 22

F
portio minor submarines the gasserion/semilunar ganglion before joining the mandibular branch.

Front 23

what travels through the f. spinosum?

Back 23

middle meningel a. and v.
recurrent mening. n.

Front 24

path of mandib n. to its branches

Back 24

portio major and portio minor leave mid cranial fossa through f. ovale.

meet to form mandib n. of trigem (minor subm gasserion/semilunar/trigem ganglion)

branches:
ant post divisions
recurrent meningeal branch (f. spin)
branch to otic ganglion

Front 25

what are the branches of the posterior division of the mandib nerve?

Back 25

n. to mylohyoid
lingual n. (ant 2/3 tongue)
inf. alveolar n.
auriculotemporal n. (button hole)

Front 26

the middle mening a. passes through a buttonhole n. what is it called?

Back 26

auriculotemporal n. - branch of post div of mandib n.

Front 27

what mm. are supplied by the mandibular n.?

Back 27

-masticatory mm.
-floor of mouth (ant belly dig and mylohyoid)
- tensor palati and tensor tympani

8 mm.

Front 28

desc parasymp innervation for:
a. parotid gland
b. submandib gland/ sublingual gland

Back 28

???

Front 29

Where does the nervous spinosus pass from and into?

Back 29

nervous spinosus aka recurrent meningeal branch of mandibular n.

from the mandib n. (aka middle mening branch) - to foramen spinosum into mid cran fossa

Front 30

unique characterstics of the mandible

Back 30

largest and strongest facial bone
most fractured facial bone
most resistant to decay

only truly movable bone of skull
means "to chew" in latin
aka (historically) - inferior maxillary bone

Front 31

this bone makes teh fewest articulations of any other fcial bone\

what are its articulations

Back 31

mandible

the two temporal bones - but indirectly through the articular disks

Front 32

mandible's uniqueness of facial bones

Back 32

fewest articulations
no artic with facial keystone
no artic with any facial bones

Front 33

name the three craniometric points of the mandible

Back 33

gonion
pogonion
gnathion

Front 34

what is the 2nd bone to commence ossification? 1st bone?

Back 34

2nd - mandible
1st - clavicle

Front 35

what structure occupies the pteryg notch?

Back 35

pyramidal process of palatine
- betwn lat. and med. pteryg proc

also btwn maxil. and mandible

Front 36

what masticating m. does not attach to the sphenoid bone?

Back 36

masseter m.
temporalis m.

Front 37

What muscle inserts on the pterygoid fovea? where does it originate?

Back 37

lateral pterygoid inserts on pteryg fovea of mandible.
o - creast of g. wing of sphen

Front 38

what lig is known as spine-to-spine?
what two spines connect?

Back 38

spine of sphen - to - lingula of mand
= sphenomandib lig

Front 39

differentiate pterygoid notch, fovea, and fossa.

Back 39

notch - btwn pteryg processes -palatine bone fits in

fovea - by head of mandible - l. pterygoid m. insertion

fossa - btwn pterygo processes (post) - Origin of m. pteryg m. and tensor paliti