The Face and Facial Expression
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Transcript The Face and Facial Expression
The Face and Facial Expression
235 Human Anatomy
Dr Stuart Bunt
Visual Inspection
The muscles of the lips
Orbicularis oris
– sphincter muscle of the mouth
Elevators of the upper lip
–
–
–
–
Zygomaticus minor
Levator labii superioris
Nasalis
Zygomaticus major
Depressors of the lips
Depressor labii
inferioris
Platysma
Depressor anguli
oris
Mentalis
Retractors of the angle of the
mouth
Zygomaticus
major
Depressor anguli
oris
Risorius
Platysma
Muscles attached to the nose
Nasalis
Levator labii,
superioris alaeque
nasi
Levator labii
superioris
Zygomaticus minor
Procerus
Muscles around the orbit and ear
Orbicularis oculi
– orbital
– palpebral
Depressor supercilli
Corrugator supercilli
Temporoparietalis
Procerus
Occipito frontalis
– frontalis
Problems with eye closure
7th nerve paralysis
General paralysis
Nerve Supply
Entirely by 7th Nerve
Entirely motor
– except taste from ant
2/3 of tongue
Also supplies tensor
tympani of same side
NOT upper eyelid
– 3rd Nerve
The Facial Nerve
Auditory and facial
nerve enter internal
auditory canal
Fibres leave for
Pterygo-palatine
ganglion/otic ganglion
External petrosal
nerve
Chorda tympani to
tongue
Through facial canal
in mastoid
Clinical Evaluation
“Upper Motor
Neuron”
– cortex controls lower
opposite face
– forehead and eye
closure dual
consensual reflexes
“Lower Motor
Neuron”
– all muscles on one
side affected
– taste affected
7th nerve damage
Bell’s palsy
–
–
–
–
–
pain around ear
no sensory impairment
complete palsy
rapid recovery(2-8wks)
Entrapment in facial
canal after infection?
– steroids in severe cases
where taste affected
Other 7th nerve lesions
Ramsay-Hunt
syndrome
– Herpes Zoster of 7th
nerve
– very severe pain in ear
– vescicles
– poor recovery
Hemifacial spasm
– irritation of nerve by
blood vessel?