Head and Neck Week 2-mastication, nose, mouth, pharynx and larynx Flashcards
coughing is only possible when …
the larynx can close effectively
where does the pharynx start and end
base of the skull
oesophagus
hat vertebral level does trachea and oesophagus begin
C6
what part of the ethmoid bone contributes to the nasal cavity
cribiform plate
what part of the ethmoid bone contributes to the nasal cavity
cribiform plate
what bones form the roof of the nose x4
nasal bones, frontal bone, ethmoid and sphenoid
what forms the floor of the nose x2
palatine processes of the maxillae and palatine bones- make hard palate
what bones form the septum x2
vomer below
perpendicular plate of ethmoid above
ethmoid bone: what passes through the cribriform plate
olfactory nerve fibres
ethmoid bone: what attaches to the crista galli
falx cerebri- sheet of dura mater that separates the brains hemispheres
what epithelium forms the respiratory mucosa lining the nasal cavity
pseudostratified columnar epithelium
what is the roof of the nasal cavity lined by
olfactory musocsa
what cranial nerve innervates olfactory mucosa
and what else does it do
olfactory nerve - CNI
sense of smell
what is the space behind nasal conchae called
meatus
name of space above superior concha
spehnoethmoidal recess
what bone are the sup and middle concha a part of
ethmoid
what artery branches supply the nose
what veins supplies the nose
ophthalmic- from ICA
ECA
venous plexus
what does the spheno-ethmoid recess open into
sphenoidal sinus
what does the superior meatus open into
posterior ethmoid cells
what does the middle meatus open into x4
maxillary sinus
frontal sinus
anterior ethmoid air cells
middle ethmoid air cells
what does he inferior meatus open into
nasolacrimal duct
what sinus does not drain well and is indented by tooth sockets
maxillary
what nerve innervates sinuses overall
trigeminal CN V
what branch of CN V innervates: frontal sinus
supraorbital V1
what branch of CN V innervates: maxillary sinus
infraorbital and maxillary V2
what branch of CN V innervates: sphenoid air sinus
posterior ethmoidal nerve V1+2
what branch of CN V innervates: ethmoidal air cells
ethmoidal branches of nasocilliary nerve V1
which bones form the roof of the nasopharynx
body of sphenoid
basilar part of occipital
2 important structures in nasopharynx
adenoids
orifice of auditory or eustachian tubes
posterior lip of eustachian tube is prominent due to what muscle
salpinopharyngeous
what type of joint is the TMJ
synovial hinge
2 articular processes that form the TMJ
mandibular fossa of temporal bone
condylar process of mandible
what movements occur at the TMJ x5
1.open
2. close
3. protusion
4. retrusion
5. side to side
4 muscles of mastication
temporalis
masseter
lateral + medial pterygoid
2 bony attachments of temporalis
temporal fossa
coronoid process of mandible
anterior vs posterior temporalis fibre direction
and action
ant- vertical
post- horizontal
ant-elevate mandible
post- retract mandible
2 bony attachments of massater
maxillary process of zygomatic bone and arch
outer surface of ramus and angle of mandible
action of masseter
close mouth
what surface does the lateral and medial pterygoid muscles attatch
and on what plate
lateral-lateral surface
medial-medial surface
of the LATERAL pterygoid plate
how does the lateral/medial pterygoid muscle attach to the mandible
lateral- into TMJ to the neck of mandible and articulate disk of joint
medial- medial surface of ramus and angle of mandible
action of pterygoids:
1. 2 laterals
- lateral and medial of same side contract
- 2 medials contracts
- protraction of mandible and depress chin
- medially rotate mandible swings to other side
- elevate and protrude mandible
what depresses the mandible x2
suprahyoid muscles
gravity
mandible movement summary: what muscles elevate x3
- masseter
- temporalis
- medial pterygoid
mandible movement summary: what muscle protrudes
massater
mandible movement summary: what muscle retract
temporalis
mandible movement summary: what muscle moves side to side
lateral pterygoid
what division of trigeminal is the only one to carry both sensory and motor
mandibular V3
what innervates muscles of mastication
mandibular trigeminal CN5 V3
what foramen does CN 5 come out of
ovale foramen
where are the motor muscles of mastication found
infratemporal fossa
what nerve provides sensory stimulation for mandibular area
what is it a branch of
where does it enter
mental
trigeminal
mandibular fossa
what innervates the buccinator
where does the buccinator lie
facial
lateral walls of oral cavity
what muscle contracts to close lips
orbicularis oris
name for the poterior opening of the oral cavity
oropharyngeal isthmus
Which two bones form the hard palate?
maxilla
palatine bone
name for muscle of uvula
musculus uvulae
5 muscles of soft palate
1 palatoglossus
2 palatopharyngeus
3 tensor veli palatini
4 musculus uvulae
5 levator veli palatini muscles
general sesnosry supply to soft palate
maxillary and glossopharyngeal nerve
special sensory innervation of soft palate
facial
motor/mucous innervation to soft palate
glossopharyngeal
what do the muscles of the soft palate do
elevate it to close pharyngeal isthmus from food