A16 - Sensory Innervation to the Face Flashcards
What is an area of the skin supplied by the given sensory fibres in a given somatic nerve?
dermatome
What is the only part of the face supplied by a spinal nerve?
angle of the mandible - greta auricular
What are the 3 branches of the trigeminal nerve?
ophthalmic -
maxillary -
mandibular -
What does the ophthalmic nerve supply?
upper eyelid, bridge of nose, forehead
What are the branches of the ophthalmic nerve and what is the dominant nerve?
dominant - supraorbital
lacrimal
infra/supra trochlear
external nasal
What nerve supplies the cheek, wings of nostrils, lower eyelid, upper lip and anterior part of temporal?
maxillary nerve
What is the dominant branch of the maxillary and the other branches?
dominant - infra-orbital
zygomatico- temporal
zygomatico- facial
What does the mandibular nerve supply?
posterior ans middle part of temporal
chin
lower lip
What are the branches of the mandicular nerve? Name the dominant.
dominant - mental
long buccal
auriculo-temporal
Where do the trigeminal branches exit the skull?
Va - supra-orbital foramen
Vb - infra-orbital foramen
Vc - mental foreman
How would you clinically test the nerve supply to the face?
- ask the patient to close their eyes
- brush the skin in each dermatome with cotton wool and ask the patient where they feel being touches
- compare the left and right
What supplies blood to the superio of the face?
internal carotid -
ophthalmic
supraorbital
supratrochlear
What supplies blood to posterior face?
internal carotid -
superficial temporal
external carotid -
posterior auricular
What supplies the inferior part of the face?
external carotid -
facial artery
mental branch of the maxillary
What supplies the midface?
external carotid -
infra-orbital branch of maxillary
