anatomy of head and neck 2 :) Flashcards
what is the eyeball known as
globe within the orbits
where are the infraorbital foramen
holes beneath the orbits
what is the anatomical variation on the top of the orbit
either superorbital foramen or notch
how many bones does the skull contain
22
bones of the cranium
8 occipital parietal (2) frontal temporal 2 sphenoid ethmoid
connection between skull bones
sutures (immovable joints)
where are synovial joins found in the facial area
mandible connects to crainium
allows hinging of mandible
where does the mandible articulte with
condyle (back) of mandible with underside of temple bone
what holds the condyle in place
ligament
accessory ligaments of the mandible
not part of TMJ
depress the mandible
muscles of mastication
masseter
temporalis
masseter
attaches to outer ramus of mandible
strongest jaw muscle
temporalis
fan shaped
attach to mandible
pull mandible back
orbicularis oculi
ring around eye
scrunch eye clsoed
orbicularlis oris
form circular sphincter around mouth
close mouth/pirse lips
zygomaticus
inserts into corner of mouth
smile
lip elevators
pulls lip up
inserts into upper lip
lip depressors
inserts into lower lip
buccinator
forms flesh of cheeks
works with mastication muscles to help push food back into OC
rhyme for facial nerve spilting
ten zebras buggered my cat
what does the facial branch split into
Temporal zygomatic buccal mandibular cervical
where do the branches of CN VII split
when passing through parotid gland
where does the zygomatic branch go
towards the eye
what do the branches of the facial nerve carry
motor
how can function of branches of facial nerve be testes
exggerated facial expressions
look for symmetry
trigeminla nerve branches
ophthalmic
maxillary
mandibular
type of nerves of trigeminal branches
v1 sensory
v2 sensory
v4 both
where does the opthalimis pass
supraorbital notch/foramen
what allows maxillary to pass
infraorbital
what allows mandibular to pass
mental
testing for trigeminal nerve
sensory - sharp blunt test
motor innervation - protrude lower jaw
will deviate to injured side
what supplies blood to the edge of the orbits
facial artery
what supplies blood to the superficial structures of the temple
superficial temporal artery
what supplies blood to the mandible ect
maxillary artery
venous drainage
superficial temporal drains into retro mandibular vein
posterior/anterior branch to internal/external jugular vien
