facial muscles Flashcards
the ___ ___ muscle performs sphincter-like actions, central to lip movements. what is meant by sphinctor-like
fibres of this single muscle forms ring. anatomical sphinctor because all fibres belong to the same muscle
the OO has 2 layers ___ and ___
generally what are their functions
superficial deep
Deep Part: Strength for forceful mouth closure, gripping objects, and generating
pressure for bilabial consonants.
▶ Superficial Part: Fine control for nuanced facial expressions and detailed speech
articulation.
the OO has 2 concentric rings around the mouth. ___ and ___
describe each one
close/far from mouth opening
protruded/unprotruded
Marginal Part (OOm):
▶ Inner zone close to the mouth opening.
▶ Produces rounded, unprotruded lips—”inrounded” shapes.
ex. [y]
Peripheral Part (OOp):
▶ Outer zone, farther from the center.
▶ Produces lip protrusion—”outrounded” shapes.
ex. [u]
do you activate peripheral and marginal parts at the same time?
yes
one just takes the lead while the other provides stability
The OO can be divided vertically into upper and lower components: ___ and ___
which controls upper lip movement which controls lower
superior, inferior
Orbicularis Oris Superior (OOs):
▶ Controls upper lip movement.
Orbicularis Oris Inferior (OOi):
▶ Controls lower lip movement.
do you activate superior and inferior parts at the same time?
no they can act independently
the cheek muscle is aka the ___ muscle
its main job is to ___ the cheeks for things like blowing air
buccinator
stiffen
the ___ muscle is aka the “laugh” muscle,
Runs from the____ muscle to the skin at the corners of the mouth.
this creates a(n) __ smile
risorius
masseter
insincere
the ___ muscle is sometimes referred to as the “pouting” muscle
Originates from the front of the ____, inserting into the skin of the chin.
how does it aid in “pouting”
mentalis
mandible
Pulls the chin up towards the lower lip, aiding in pouting or strengthening upward
movements of the lower lip.
Levator Labii Superioris (LLS) Muscle
origin, insertion, function
can these 2 muscles be activated individually
A broad sheet of muscle originating from the lower orbit of the eyes to the
zygomatic arch.
▶ Inserts into the upper lip, functioning to raise it.
yes
The _____ is associated with the “sincere” smile, raising the corners
of the mouth.
Both muscles originate from the ____ and insert into the corners of the
mouth.
zygomaticus major
zygomatic arch
The ____ muscle is associated with actual frowning. it originates from the lower end of the ____ and inserts into the sides of the mouth
it is a depressor muscle for the __ lip
Depressor Anguli Oris
mandible
upper
which muscle is:
▶ A pair of small muscles originating from the lower edge of the mandible.
▶ Inserts into the skin of the lower lip, used for lowering and spreading the lower lip.
it is a depressor muscle for the __ lip
Depressor Labii Inferioris Muscle
lower
what is openface
how could it help us in dialogue?
A toolkit that provides real-time behaviour of facial tracking, eyegaze estimation, etc
Enhances understanding of non-verbal cues in dialogues (emotion, etc)
Which of the following is true about the zygomaticus major muscle?
It is a muscle of mastication primarily involved in chewing.
It assists in the creation of a frowning face.
It plays a major role in smiling by pulling the angle of the mouth upward and laterally.
It originates from the mandible and inserts into the orbicularis oris.
It plays a major role in smiling by pulling the angle of the mouth upward and laterally.
Which of the following is not true about the McGurk effect in speech perception?
It provides evidence that speech perception is multimodal.
It occurs when conflicting auditory and visual speech signals lead to a third, fused percept.
It is associated with some degree of hearing loss.
It demonstrates the interaction between auditory and visual cues in speech perception.
It is associated with some degree of hearing loss.
While analyzing some fieldwork video data, John noticed that for certain rounded vowels in a language, speakers produce the vowel with lip rounding but without protrusion. Which part or layer of the orbicularis oris muscle is likely the most active in such articulation?
Marginal part
Peripheral part
Deep layer
Superficial layer
Marginal part
Which of the following is likely not a function of the buccinator muscle in speech production?
Assisting the suprahyoid muscles in elevating the larynx
Stabilizing the cheeks during articulation
Preventing the cheek from puffing up
Assisting in maintaining intraoral pressure
Assisting the suprahyoid muscles in elevating the larynx
The risorius muscle is more superficial than the buccinator and contributes to retracting the corners of the mouth laterally during speech or smiling.
True
False
true
