S2-Superficial face Flashcards
what is the somatosensory innervation of the superficial face
trigeminal nerve (superficial face, forehead, oral cavity). Facial nerve (skin of outer ear, nasopharynx, taste)
what is the somatomotor innervation of the superficial face
trigeminal nerve (muscles of mastication). facial nerve (muscles of facial expression)
what supplies the sensory to superficial face and scalp
greater and lesser occipital nerve, greater auricular nerve, trigeminal nerve, facial nerve
where does the greater occipital nerve emerge and what does it innervate
dorsal rami of C2,
emerges from below sub occipital triangle;
innervates scalp on back of head
what rami does the lesser occipital nerve come from and what does it innervate
ventral rami of C2 and innervates scalp on lateral areas of head, posterior to ear
what rami does greater auricular nerve come from and what does it innervate
ventral rami of C2 and Dorsal rami of C3.
innervates skin over parotid gland and mastoid process along with surfaces of outer ear
what are the 3 branches of the trigeminal nerve
ophthalmic, maxilliary, mandibular
where does the ophthalmic nerve exit skull
through superior orbital fissure
what are the major branches of the ophthalmic nerve
frontal, lacrimal, nasociliary
what are the major branches of the frontal nerve and what do they do
supraorbital: passes through supraorbital foramen; skin of lateral forehead/anterior scalp
supratrochlear: skin of medial forehead
what are the branches of the nasociliary nerve and what do they do
infratrochlear: skin lateral to root of nose (bridge).
external nasal n (from anterior ethmoid n): skin of nasal ala, vestibule and dorsum of nose
where does the maxillary nerve exit the skull
foramen rotundum
what are the major branches of the maxillary nerve
infraorbital, zygomatic
what does the infraorbital n. pass through and what does it innervate
passes through infraorbital foramen, maxillary sinus. innervates skin of cheek, lateral nose and superior lip
what does zygomaticofacial nerve inneravte
skin on prominence of cheek
what does the zygomaticotemporal nerve innervate
anterior part of temporal fossa
where does the mandibular nerve exit the skull
foramen ovale
what are the major branches of the mandibular nerve
auriculotemporal, buccal, mental n
what does the auricotemporal nerve innervate
skin posterior 2/3 temporal region
what does the mental nerve innervate
skin of chin and inferior lip
what are all muscles of mastication innervated by
CN V3 (mandibular branch)
what are the muscles of mastication
masseter, temporalis, medial pterygoid, lateral pterygoid
what are all muscles of facial expression innervated by
CN VII (facial nerve)
what does the buccinator muscle do
compresses cheek, holds food between teeth during chewing
