Superficial Face - Stephens 3/30 Flashcards
Scalp lacerations of what layer result in profuse bleeding?
Deep, close, subcutaneous tissue layer
Which layer of the scalp do avulsion injuries tend to separate in?
Loose subaponeurotic layer
What is special about the periosteum of the cranium?
Very poor osteopenic (regenerative) properties
Insensitive to pain
Depressed skull fractures involve what layer of the scalp?
What may tear?
What may develop and what may be contained in the development?
Loose subaponeurotic layer
Dural venous sinus
Scalp hematoma
CSF leakage
What is a major blood supply to the scalp?
Superficial temporal artery
What supplies innervation to the medial part of the skin of the forehead?
Lateral part?
Supratrochlear n.
Supraorbital n. (Both from V1)
What supplies innervation to the skin of the anterior temporal region?
Zygomaticotemproal nerve
What supplies innervation to the skin in the temporal region?
Auriculotemporal n. (From V3)
How can infections of scalp spread?
What layer?
Emissary veins to the dural venous sinuses
Loose subaponeurotic layer
What is embedded in the parenchyma surrounding the parotid gland?
Facial nerve
Retromandibular vein
External carotid artery
The cell bodies of pre-ganglionic PS fibers to the parotid gland are located where?
Axons course with what?
Passes through what?
Joins what nerve and synapses in what ganglion?
Inferior salivatory nucleus
CN 9
Tympanic plexus
Lesser petrosal and Otic ganglion
Postganglionic sympathetic fibers to the parotid gland are from where?
Superior cervical ganglion
Postganglionic PS fibers reach the parotid gland via what nerve?
Auriculotemporal nerve
Raising the eyebrows is done by what muscle?
Innervation?
Clinical sign?
Frontalis
Temporal
Inability to elevate the eyebrows
Blinking/winking the eyelids is done by what muscle?
Innervation?
Clinical sign?
Orbicularis Oculi
Temporal
Zygomatic
Drooping of the lower lid
Spilling of tears
Corneal drying
Smiling is done by what muscle?
Innervation?
Clinical sign?
Zygomatic major
Zygomatic
Inability to elevate and retract the angle of the mouth
Puckering the lips is done by what muscle?
Innervation?
Clinical sign?
Orbicularis oris
Buccal
Drooling of saliva from the corner of the mouth
Flaring of the neck is done by what muscle?
Innervation?
Clinical sign?
Platysma
Cervical
Flaring of ant. Neck
What is the etiology of Bell’s palsy?
Idiopathic
Surgical
Traumatic
Parotid gland tumor
What are the signs and symptoms of Bell’s Palsy?
Ectropion Piphora Drying of cornea Inability to wink Unequal smile Drooling from corner of mouth Hyperacusis
What are 4 branches of the facial artery?
Inferior labial
Superior labial
Lateral nasal
Angular
What arteries are distal branches of the internal carotid a?
They are terminal branches of what?
Supraorbital and supratrochlear
Ophthalmic a.
What forms the retromandibular vein?
Maxillary vein
Superficial temporal vein
What pierces the buccinator muscle?
What does this muscle allow you to do?
What is attached posteriorly to?
Parotid duct
Suck on a straw
Pterygomandibular Raphe
What kind of epithelium is skin of the scalp?
Stratified squamous keratinized
