04muscles facial expression prnt
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Muscles of Facial ExpressionLecture #4
Head and Neck AnatomyH211
Facial Muscles – Terminology
• “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
• Buccinator: Moves “bolus” of food
Table 4-2 pg. 100
Fig 4_11
Facial Muscles – Opening
• Risorius: Smile widely
Table 4-2 pg. 100
Fig 4-12
Facial Muscles – Opening
• Risorius: Smile widely
Table 4-2 pg. 100
Facial Muscles – Raising Upper Lip
• Levator labii superioris: Raises upper lip
Table 4-2 pg. 100
Fig 4-13
Facial Muscles – Raising Upper Lip
• Levator labii superioris: Raises upper lip
Table 4-2 pg. 100
Facial Muscles – Raising Upper Lip
• Levator labii superioris alaeque nasi: Raises upper lip and widens nostril
Table 4-2 pg. 100
Fig 4-13
Facial Muscles – Raising Upper Lip
• Levator labii superioris alaeque nasi: Raises upper lip and widens nostril
Table 4-2 pg. 100
Facial Muscles – Smiling
• Zygomaticus major: Draws cheek back and corner of mouth open
Table 4-2 pg. 100
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
• Zygomaticus minor: Raises upper lip
Table 4-2 pg. 100
Fig 4-13
Facial Muscles – Raising Upper Lip
• Zygomaticus minor: Raises upper lip
Table 4-2 pg. 100
Facial Muscles – Smiling
• Levator anguli oris: Raises angle of mouth
Table 4-2 pg. 100
Fig 4-13
Facial Muscles – Smiling
• Levator anguli oris: Raises angle of mouth
Table 4-2 pg. 100
Facial Muscles – Frowning
• Depressor anguli oris: Lowers angle of mouth
Table 4-2 pg. 100
Fig 4-15
Facial Muscles – Frowning
• Depressor anguli oris: Lowers angle of mouth
Table 4-2 pg. 100
Facial Muscles – Lowering Lower Lip
• Depressor labii inferioris: Lowers lower lip
Table 4-2 pg. 100
Fig 4-15
Facial Muscles – Lowering Lower Lip
• Depressor labii inferioris: Lowers lower lip
Table 4-2 pg. 100
Facial Muscles – Raising Chin
• Mentalis: Raises chin, protrudes lower lip, and Decreases depth of lower vestibule.
Table 4-2 pg. 100
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
• Platysma: Raises skin of neck and lowers corner of mouth.
Table 4-2 pg. 100
Fig 4-17
Facial Muscles – Grimacing
• Platysma: Raises skin of neck and lowers corner of mouth
Table 4-2 pg. 100
The EndThe End