BMS 355 TMJ/Spine

mandible

the mobile segment of the TMJ

temporal bone

stationary segment of TMJ

mandibular fossa

what structure houses the TMJ disc

articular eminence/tubercle

anterior portion of the mandibular fossa

postglenoid process/tubercle

posterior portion of mandibular fossa

resist lateral dislocation

temporomandibular (lateral) ligament function

resist distension of mandible from base of the skull

stylomandibular ligament/sphenomandibular ligament function

opens

the stylomandibular and sphenomandibular are taught when the mouth \_________

2/distinct/interdependent

the TMJ has \____ \_________, yet highly \_________ articulations

meniscus

the TMJ disc is also called the...

biconcave (superior/inferior)

TMJ disc structure

true

T or F
the TMJ joint is incongruent

mandibular condyle/inferior disc surface

inferior TMJ location

articular eminence/superior disc surface

superior TMJ location

hinge

what type of joint is the inferior TMJ

gliding

what type of joint is the superior TMJ

fibrocartilage

what CT covers the mandibular condyle and the articular eminence

easy sliding

what does fibrocartilage allow

reposition disc when mandible elevates

superior retrodiscal laminae function

draw down on disc/resist disc dislocation

inferior retrodiscal laminae functions

collagen

the inferior retrodiscal laminae is made of...

elastic fibers

the superior retrodiscal laminae id made of...

temporal fossa

temporalis origin

coronoid fossa/anterior border of mandibular ramus

temporalis insertion

elevate/retract mandible

temporalis function

zygomatic arch/maxillary process of zygomatic bone

masseter origin

mandibular angle/lateral surface of coronoid process

masseter insertion

elevation of mandible

masseter genera function

protraction of mandible

superior belly masseter function

retraction of mandible

inferior belly masseter function

lateral surface of greater wing

superior head of lateral pterygoid origin

lateral surface of lateral pterygoid plate

origin of inferior head of lateral pterygoid

TMJ disc/pterygoin fovea

lateral pterygoid insertion

protraction of mandible/lateral swing

lateral pterygoid function

medial surface of lateral pterygoid plate/palatine and tuberosity of maxilla

medial pterygoid origin

medial surface of ramus/angle of mandible

medial pterygoid insertion

protract mandible

medial pterygoid function

digastric/mylohyhoid/stylohyoid/geniohyoid

suprahyoid muscles (4)

mastoid process

origin of posterior belly of digastric

digastric fossa of mandible

origin of anterior belly of digastric

intermediate tendon through fibrous loop on hyoid

digastric insertion

depression of mandible

digastric function

mylohyoid line of mandible

mylohyoid origin

hyoid body/midline at mylohyoid raphe

mylohyoid insertion

depression of mandible/elevate oral cavity floor

mylohyoid function

styloid process

stylohyoid origin

lateral margin of hyoid

stylohyoid insertion

depression of mandible

stylohyoid function

inner surface of mandible

geniohyoid origin

hyoid body

geniohyoid insertion

depression of mandible

geniohyoid function

sternohyoid/sternothyroid/thyrohyoid/omohyoid

infrahyoid muscles (4)

depression of mandible/depression of hyoid

infrahyoid muscle functions

auriculotemporal/masseteric/deep temporal

nerves that branch off V3

foramen ovale

where does the mandibular division of the trigeminal (V3) exit

Otic ganglion

TMJ parasympathetic innervation

CN IX via lesser petrosal n

preganglionics of otic ganglion

auriculotemporal n

postganglionics of otic ganglion

synovial fluid production

otic ganglion function

Maxillary/Superficial Temporal

TMJ is supplied with blood from what arteries

deep auricular/anterior tympanic

maxillary artery branches

auricular

superficial temporal artery branches

body

what structure is weightbearing in vertebrae

pedicle/lamina

what structure is for protection in vertebrae

spinous process/transverse process/ala

what structure is for muscular /ligament attachment in vertebrae

superior/inferior articular processes/facets

what structure is for articulation in vertebrae

cervical

what vertebrae are the most mobile

transverse

what plane are cervical vertebrae in

resist lateral dislocation

uncinate process function

true

T or F
transverse foramen are only on cervical vertebrae

verteral a

what passes through transverse foramen

uncovertebral

what joint is specific to the cervical region

lateral flexion

what do uncovertebral joints limit in the cervical spine

flexion/extension

what do uncovertebral joints allow in the cervical spine

no

do uncovertebral joints have a joint capsule

body/C1

the dense acts as a \______ for \____

dens

transverse cervical ligament location

resists dislocation of C1

transverse cervical ligament function

anterior arch

where does the dens articulate with C1

no

does C1 have a body

coronal

what plane are thoracic vertebrae in

stationary

thoracic vertebrae are the most...

costal/demicostal/transverse

facets of thoracic vertebrae

costal facet

full facet

head of rib

where does a costal facet articulate

demicostal facet

half facet

superior or inferior facets of rib

where do demicostal facets articulate

tranverse costal facet

full facet

tubercle of rib

transverse costal facet articulation

sagittal

what plane are lumbar vertebrae in

flexion/extension

what function does the sagittal plane allow

cartilage

CT of sacrum/coccyx

synostoses

sacral joints become...

transverse processes

what forms the ala

sacroiliac joint

what does the ala help form

dorsal/ventral rami of spinal nerves

dorsal/ventral foramina on the sacrum are for...

intercoccygeal

the coccygeal region has what joints

post puberty

when do intercoccygeal joints fuse

cartilaginous symphysis

sacrococcygeal region contains a \_________ which could become a synostosis in old age

temporomandibular (lateral)/stylomandibular/sphenomandibular

ligaments that act on the TMJ