Face and Scalp Flashcards
All the muscles of facial expression are innervated by the ___ nerve, which is derived from the ___ pharyngeal arch
facial; 2nd
This muscle of facial expression encircles the eye and functions to close eyelids
orbicularis oculi
This muscle of facial expression is deep to the eyebrows, and draws the eyebrows to the midline
corrugator supercilii
This muscle of facial expression is at the root of the nose and is active when a person frowns
procerus
This muscle of facial expression is the largest of the three nasal group muscles. It consists of two parts: a transverse and alar part
nasalis
This muscle of facial expression assists in widening the nares
depressor septi nasi
This muscle of facial expression encircles the mouth and is active in pursing the lips, narrowing the mouth, and closing the lips
orbicularis oris
This is the muscular portion of the cheek, deep to the other muscles of facial expression. It’s active in pressing the cheeks against the teeth
buccinator
This muscle of facial expression (oral - lower group) is the depressor of the lower lip
depressor labii inferioris
This muscle of facial expression (oral - lower group) is the depressor of the angle of the mouth
depressor anguli oris
This muscle of facial expression (oral - lower group) is the deepest of the lower group of oral muscles and positions the lip during drinking or pouting
mentalis
This muscle of facial expression (oral -upper group) is active in grinning, extends the corner of the mouth laterally
Risorius
This muscle(s) of facial expression (oral -upper group) has an origin from the lateral surface of the zygomatic bone and is active in smiling
Zgomaticus major and minor
This muscle of facial expression (oral -upper group) raises the angle of the mouth, and is the deepest of the upper group of oral muscles
levator anguli oris
This muscle of facial expression (oral -upper group) raises the upper lip, and deepens the furrow between the nose
levator labii superioris
This muscle of facial expression (oral -upper group) is a lifter of the upper lip and the wing of the nose - flaring of nostrils
levator labii superioris alaque nasi
This muscle of facial expression is a large thin sheet found in the superficial fascia of the neck, origin is just below the clavicle to arise to the mandible, action: tenses the skin of the neck, and can depress the lower lip and corner of the mouth
platysma
This muscle of facial expression is on the forehead and inserts into galea aponeurotica. Its action is to move the scalp and wrinkle the forehead
occipitofrontalis
There are three auricular muscles: anterior, superior, and posterior. Give the action of each one.
anterior: elevates and moves the ear forward
superior: elevates the ear
posterior: retracts and elevates the ear
The part of the facial nerve that innervates the muscles of facial expression leaves the posterior cranial fossa through the internal auditory meatus and then exits the skull by the ____ foramen
stylomastoid
After leaving the stylomastoid foramen, the facial nerve enters the substance of the ___ gland and forms a plexus
parotid
Name the branches from the plexus formed by the facial nerve and what they innervate
hint: A Tiny Zebra Bit My Cheek
posterior Auricular - posterior auricular muscle and occipitofrontalis
Temporal branch - orbicularis oculi
Zygomatic branch - levator labii superioris
Buccal branch - buccinator
Mandibular branch - orbicularis oris
Cervical branch - platysma
Another branch from the facial nerve is the nerve to stylohyoid which also innervates the ___ belly of ____
posterior digastric
The facial nerve gives a sensory branch via the ___ ____ nerve which is involved in taste from the anterior 2/3 of the tongue
chorda tympani
The facial nerve has a parasympathetic branch to what glands?
the lacrimal gland, mucosal glands of the nasal and oral cavities