Podcast
Questions and Answers
Which muscle is primarily responsible for closing the mouth and resisting bulging while blowing?
Which muscle is primarily responsible for closing the mouth and resisting bulging while blowing?
- Zygomatic Major
- Mentalis
- Depressor of the Lower Lip
- Buccinator (correct)
Which of the following muscles raises the upper lip?
Which of the following muscles raises the upper lip?
- Orbicularis Oris
- Mentalis
- Zygomatic Minor (correct)
- Platysma
Which muscle contributes to the action of pulling the lower lip up and forward?
Which muscle contributes to the action of pulling the lower lip up and forward?
- Elevator of the Angle of the Mouth
- Depressor of the Angle of the Mouth
- Mentalis (correct)
- Risorius
Which facial muscle primarily participates in smiling by raising the corners of the mouth?
Which facial muscle primarily participates in smiling by raising the corners of the mouth?
What action is associated with the Platysma muscle?
What action is associated with the Platysma muscle?
What is the principal action of the occipitofrontal muscle?
What is the principal action of the occipitofrontal muscle?
Which muscle is primarily involved in creating vertical wrinkles above the nose?
Which muscle is primarily involved in creating vertical wrinkles above the nose?
Where does the orbicularis oculi muscle originate?
Where does the orbicularis oculi muscle originate?
What is the role of the frontal belly in facial expression?
What is the role of the frontal belly in facial expression?
Which of the following actions is NOT performed by the orbicularis oculi?
Which of the following actions is NOT performed by the orbicularis oculi?
Flashcards
Occipitofrontal Muscle
Occipitofrontal Muscle
Muscle that raises eyebrows and wrinkles forehead; pulls scalp forward.
Orbicularis Oculi
Orbicularis Oculi
Muscle that closes eyelids; varies in firmness for blinking.
Corrugator Supercilii
Corrugator Supercilii
Muscle that moves eyebrows medially and downward, indicating worry.
Frontal Belly
Frontal Belly
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Occipital Belly
Occipital Belly
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Orbicularis Oris
Orbicularis Oris
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Zygomatic Major
Zygomatic Major
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Buccinator
Buccinator
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Mentalis
Mentalis
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Depressor of the Lower Lip
Depressor of the Lower Lip
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Study Notes
Muscles of Facial Expression
-
Occipitofrontal:
- Origin: Epicranial aponeurosis
- Insertion: Skin and subcutaneous tissue of eyebrows and forehead
- Action: Elevates eyebrows, wrinkles forehead (e.g., surprise, curiosity)
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Frontal Belly:
- Origin: Epicranial aponeurosis
- Insertion: Skin and subcutaneous tissue of eyebrows and forehead
- Action: Elevates eyebrows, wrinkles forehead (e.g., surprise, curiosity)
-
Occipital Belly:
- Origin: Occipital bone
- Insertion: Epicranial aponeurosis
- Action: Retracts scalp, increases efficiency of frontal belly
-
Orbicularis Oculi:
- Origin: Medial orbit
- Insertion: Skin around eyelids
- Action: Closes eyelids (e.g, blinking), smoothly; eyelid part tightens firmly
-
Corrugator Supercilii:
- Origin: Medial portion of superciliary arch
- Insertion: Skin between eyebrows
- Action: Draws eyebrows medially and downward; creates vertical wrinkles above nose (e.g., concern, worry)
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