Transcript Table 4-2 pg. 100

Muscles of Facial Expression
Lecture #4
Head and Neck Anatomy
H211
Facial Muscles – Terminology
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“Levator. . .” - Raises
“Depressor. . .” - lowers
“Major” – the larger
“Minor” – the smaller
“Superioris” – superior
“Inferiorioris” – inferior
“Orbicularis” - encircles
Table 4-2 pg. 100
Facial Muscles – Surprise
• Epicranial: Raises forehead, pulls scalp backward
Fig 4-7
Facial Muscles – Surprise
• Epicranial: Raises
forehead, pulls scalp
backward
Table 4-2 pg. 100
Facial Muscles – Closing Eyelid
• Orbicularis oculi: Closes eyelid
Fig 4-9
Facial Muscles – Closing Eyelid
• Orbicularis oculi: Closes
eyelid
Table 4-2 pg. 100
Facial Muscles – Frowning
• Corrugator supercilii:
Draws eyebrow medially
Fig 4-9
Facial Muscles – Frowning
• Corrugator supercilii:
Draws eyebrow medially
Table 4-2 pg. 100
Facial Muscles – Closing Lips
• Orbicularis oris: Closes or purses lips
Fig 4-10
Facial Muscles – Closing Lips
• Orbicularis oris: Closes or
purses lips
Table 4-2 pg. 100
Facial Muscles – Assist Chewing
Table 4-2 pg. 100
• Buccinator: Moves “bolus” of food
Fig 4_11
Facial Muscles – Opening
Table 4-2 pg. 100
• Risorius: Smile widely
Fig 4-12
Facial Muscles – Opening
• Risorius: Smile widely
Table 4-2 pg. 100
Facial Muscles – Raising Upper Lip
Table 4-2 pg. 100
• Levator labii superioris: Raises upper lip
Fig 4-13
Facial Muscles – Raising Upper Lip
• Levator labii superioris:
Raises upper lip
Table 4-2 pg. 100
Facial Muscles – Raising Upper Lip
Table 4-2 pg. 100
• Levator labii
superioris
alaeque nasi:
Raises upper
lip and widens
nostril
Fig 4-13
Facial Muscles – Raising Upper Lip
Table 4-2 pg. 100
• Levator labii
superioris
alaeque nasi:
Raises upper
lip and widens
nostril
Facial Muscles – Smiling
Table 4-2 pg. 100
• Zygomaticus
major: Draws
cheek back
and corner of
mouth open
Fig 4-13
Facial Muscles – Smiling
• Zygomaticus major:
Draws cheek back and
corner of mouth open
Table 4-2 pg. 100
Facial Muscles – Raising Upper Lip
Table 4-2 pg. 100
• Zygomaticus
minor: Raises
upper lip
Fig 4-13
Facial Muscles – Raising Upper Lip
• Zygomaticus minor:
Raises upper lip
Table 4-2 pg. 100
Facial Muscles – Smiling
Table 4-2 pg. 100
• Levator
anguli oris:
Raises angle
of mouth
Fig 4-13
Facial Muscles – Smiling
• Levator anguli oris:
Raises angle of mouth
Table 4-2 pg. 100
Facial Muscles – Frowning
Table 4-2 pg. 100
• Depressor
anguli oris:
Lowers
angle of
mouth
Fig 4-15
Facial Muscles – Frowning
• Depressor anguli oris:
Lowers angle of mouth
Table 4-2 pg. 100
Facial Muscles – Lowering Lower Lip
Table 4-2 pg. 100
• Depressor
labii
inferioris:
Lowers
lower lip
Fig 4-15
Facial Muscles – Lowering Lower Lip
• Depressor labii
inferioris: Lowers lower
lip
Table 4-2 pg. 100
Facial Muscles – Raising Chin
Table 4-2 pg. 100
• Mentalis:
Raises chin,
protrudes
lower lip, and
Decreases
depth of
lower
vestibule.
Fig 4-16
Facial Muscles – Raising Chin
• Mentalis: Raises chin,
protrudes lower lip, and
decreases depth of
lower vestibule.
Table 4-2 pg. 100
Facial Muscles – Grimacing
Table 4-2 pg. 100
• Platysma:
Raises skin
of neck and
lowers
corner of
mouth.
Fig 4-17
Facial Muscles – Grimacing
• Platysma: Raises skin of
neck and lowers corner
of mouth
Table 4-2 pg. 100
The End