Face Flashcards
What is the thinnest portion of the cranium?
squamous portion of the temporal bone
Where does the pituitary gland sit?
hypophyseal fossa
What are the layers, superficial to deep, of the scalp?
skin; subcutaneous tissue; epicranial aponeurosis; muscle or areolar space
areolar space
“dangerous space” gives mobility of the scalp; how you get a scalping injury
If you have a coronal lac, when will the lac gape?
If the lac was through the aponeurosis
What nerve innervates muscles of facial expression?
CN VII (facial)
What nerve innervates the muscles of mastication?
CN V (trigeminal)
What nerve innervates the platysma?
CN VII
What are the 3 branches of CN V?
V1: opthalmic
V2: maxillary
V3: mandibular
From the mandible up, all SA cell bodies are located where?
Trigeminal N (no synapses)
What foramen do the CN V branches exit?
V1: supraorbital
V2: infraorbital
V3: mental
What nerve give sensory innervation to the face?
CN V (Trigeminal)
Shingles
(herpes zoster); reactivation of varicella virus
herpes zoster opthalmicus
If the herpes zoster is reactivated onto the opthalmic division of the trigeminal n. it can leaad to herpes of the cornea and can lose eye; will first present w/ tingling
If there is a lip laceration that needs anesthetic, what nerve would be most ideal to sedate?
Maxillary branch of CN V (infraorbital nerve block)
Where does the facial artery end?
angular artery in angle of eye
Why is the transverse facial a. suseptible to damage?
It, along w/ the parotid duct, runs superficial to masseter.
Why is the facial vein clinically important?
it communicates w/ veins that drain into the cranial vault through the orbit; infection can spread there
Erysipelas
infection in skin (usually staph or strep) w/ bright red, tight and shiny appearance
What nerve is commonly injured in parotidectomy?
CN VII (Facial)
What are the branches of CN VII?
Temporal; Zygomatic; Buccal; Mandibular; Cervical
To Zanzobar By Motor Car
What do the CN VII branches innervate?
T: frontalis Z: orbicularis oculi B: buccinal M: depressors C: platysma
Parotitis
infection of parotid duct; unilateral (bacterial) or bilateral (viral) swelling;
Where can you see the opening of the parotid duct?
inside mouth by maxillary 2nd molar
