Lesson 1.3 - Facial Muscle
List the 3 heads of the Quadratus labii Superioris muscle.
-Levator Labii Superioris -Alaque Nasi -Zygomaticus Minor which emphasizes the Nasolabial fold.
the principle muscle of the cheek which compresses the cheeks and forms the lateral wall of the mouth.
Buccinator (Trumpeter's muscle)
What mark is formed by the Buccinator muscle?
Bucco-facial sulcus (the vertical furrow/wrinkle in the soft tissues of cheek)
a pyramid-shaped muscle of facial expression which draws the eyebrows inferiorly and medially.
Corrugator (Frowning muscle)
Another name for the frowning muscles
Corrugator muscles
The small, narrow muscle located at the medial end of the eyebrow
Currogator
Another name for the Quadratus Muscle
Depressor Labii Inferiorus
The quadrilateral muscle that approaches the lower lip from below and attaches between the middle of the mouth and the angle of the mouth
Depressor Labii Inferiorus
triangularis; a muscle of facial expression which depresses the angle of the mouth.
Depressor anguli oris (Triangularis)
quadratus; a muscle of facial expression which draws the lower lip inferiorly and slightly lateral.
Depressor labii inferiorus (Quadratus)
The double-bellied muscle which lies below the body of the mandible
Digastricus
a double-bellied muscle which draws the hyoid bone superiorly.
Digastricus
Another name for the occipito-frontalis muscle
Epicranius
the attachment of a muscle which moves the most when the muscle contracts; the ending.
Insertion
What is the physiological function of the occipito-frontalis muscle?
It draws the scalp backward raising the eyebrows.
Describe the location of the Sternocleidomastoid muscle.
It originates from the head of the sternum and clavicle and inserts at the mastoid process of the temporal bone.
Another name for the Zygomaticus Major Muscle
Laughing or Smiling Muscle
The intermediate head of the Quadratus Labii Superioris and raises the upper lip
Levator Labii Superioris
If the eyes will not properly close, this muscle may (though should NOT) be severed to aid in eye closure
Levator Palpebrae Superioris
a muscle of facial expression which elevates the angle of the mouth.
Levator anguli oris
a muscle of facial expression which elevates and extends the upper lip.
Levator labii superioris
a muscle of facial expression which elevates the upper lip and dilates the nostril opening; the common elevator;
Levator labii superioris alaque nasi (Common elevator)
The medial head of the Quadratus Labii Superioris
Levator labii superioris and alaque nasi (aka - common elevator)
a muscle of facial expression which raises the upper eyelid.
Levator palpebrae superioris
The thick quadrilateral muscle located on the side of the face near the angle of the mandible
Masseter
a muscle of mastication that closes the mandible.
Masseter
the act of chewing.
Mastication
the muscle that draws the scalp posteriorly and inferiorly and raises the eyebrows.
Mentalis Occipitofrontalis (Epicranius)
What facial markings are enhanced or formed by the Levator Angulis Oris?
Nasolabial fold and the Angulus Oris
The large muscle that covers the top and sides of the head
Occipital Frontalis Muscle
The facial markings which are formed or enhanced by the action of the Orbicularis Occuli
Optic facial sulci or Crows feet
The sphincter muscle of the mouth
Orbicularis Oris, aka Puckering Muscle
the muscle that closes the eyelids; compresses the lacrimal sacs.
Orbicularis oculi
the muscle that closes and puckers the lips.
Orbicularis oris (Puckering Muscle)
The attachment of a muscle which moves least when the muscle contracts; the beginning.
Origin
The eyelid.
Palpebra
The broad, flat superficial muscle of the neck
Platysma
thin layer of muscle covering anterior aspect of neck.
Platysma
Describe the location of the Buccinator Muscles.
Principle muscle of the cheek, lateral wall of the mouth
The long, thin muscle which extends vertically from the lower part of the nasal bone to the skin of the lower part of the forehead
Procerus
Draws the skin of the forehead inferiorly.
Procerus (Concentrating muscle)
The Transverse interciliary sulci are formed or accentuated by this muscle
Procerus, aka Concentrating muscle
the large, 3-bellied muscle extending from the cheekbone and lower rim of the eyesocket to the orbicularis oris, which raises the upper lip; its three bellies are (from medial to lateral) - levator labii superioris alaque nasi, levator labii superioris, and zygomaticus minor.
Quadratus labii superioris
the narrow superficial band of muscle which pulls the angle of the mouth laterally.
Risorius
The narrow, superficial muscle which runs across the cheek and attaches at the angle of the mouth
Risorius Muscle
The widest part of the neck is formed between these muscles
Sternocleidomastoid Muscle or SCM
Rotates and depresses the head.
Sternocleidomastoid muscle (SCM)
Closes the mandible; mastication and is the strongest chewing muscle.
Temporalis
What facial marking is enhanced by the Depressor Anguli Oris Muscle?
The Angulus Oris Eminence. The small, convex prominence, lateral to the end of the line of the lip closure of the mouth.
Another name for the Levator Labii Superioris Alaeque Nasi
The Common Elevator
The insertion point of the temporalis muscle
The Coronoid Process of the Mandible
Directionally, how are facial markings related to the muscle that creates them?
They usually lie perpendicular to the muscle that create them (at the right angle).
Describe the Quadratus Labii Superioris muscle.
This is a muscle that extends from the inferior eyesocket to the Orbicularis Oris; it has 3 bellies or heads. Levator Labii Superioris Alaque Nasi, Levator Labii, and Zygomaticus Minor which emphasizes the Nasolabial Fold - it elevates the upper lip.
Another name for the Depressor Anguli Oris Muscle
Triangularis Muscle
The facial markings produced by the corrugators
Vertical Interciliary Sulci
The muscle located lateral of the Quadratus Labii Superioris that descends obliquely from the posterior portion of the cheekbone to the angle of mouth
Zygomaticus Major Muscle
Draws the superior lip posteriorly, superiorily, and anteriorly.
Zygomaticus major (Laughing or Smiling muscle)
a muscle of the face which draws the superior lip superiorly and anteriorly; the lateral belly of the quadratus labii superiorus muscle.
Zygomaticus minor
Another name for the Trumpeter's Muscle
buccinator muscle
The movable portion of a muscle which is attached to muscle or skin
insertion
The muscle of the mouth which is located in the region of the upper canine teeth
levator anguli oris
The muscle the raises the upper eyelid
levator palpebrae superioris
Do males or females have more definite facial markings due to muscle action?
males
The muscle which forms the exterior planes of the cheek
masseter
The muscle that wrinkles the chin
mentalis
Describe the location of the Depressor Anguli Oris.
of the Depressor Anguli Oris. Located inferior to the lateral portion of the mouth. Arises from the mandible to insert into the Anguli Oris.
The broad sphincter muscle that surrounds the eye
orbicularis oculi
The portion of a muscle which is attached to a fixed point
origin
The transverse wrinkles of the neck are enhanced or caused by this muscle
platysma
The type of muscle which encircles a natural orifice of the body
sphincter
The broad, fan shaped muscle that radiates above the ear
temporalis
What are the 2 main muscles of mastication?
temporalis and masseter muscles
The lateral head of the Quadratus Labii Superioris
zygomaticus minor