MUSCLES OF FACIAL EXPRESSION Flashcards
What are the 2 parts of the cranium?
viscerocranium
neurocranium
what bones for the neurocranium?
parietal frontal sphenoid ethmoid temporal occipital
what bones form the viscerocranium?
lacrimal nasal zygomatic ethmoid vomer inferior nasal concha maxilla mandible
whats the embryonic origin of the muscles of facial expression?
2nd pharyngeal arch
what innervates the muscles of facial expression?
facial nerve (CN7)
what is CN7 palsy?
bells palsy - unexplained episode of facial muscle weakness or paralysis
what are the 4 muscles of mastication?
Masseter.
Temporalis.
Lateral pterygoid.
Medial pterygoid.
what innervates the muscles of mastication?
mandibular nerve (trigeminal nerve V3)
which muscles form the orbital group of the facial expression muscles?
orbicularis oculi
corrugated supercilii
which muscles form the nasal group of the facial expression muscles?
nasalis
procerus
depressor septi nasi
which muscles form the oral group of the facial expression muscles?
orbicularis oris buccinator depressor angle oris depressor labii inferioris mentalis risorius zygomaticus minor and major levator labii superioris levator labii superioris alaeque nasi levator anguli oris
what provides sensory innervation to the face?
trigeminal nerve branches - opthalmic, mandibular and maxillary
what supplies blood to the muscles of facial expression?
facial artery
what are the layers of the scalp?
skin dense connective tissue epicranial aponeurosis loose areolar tissue periosteum
