Podcast
Questions and Answers
Which muscle is primarily responsible for lifting the angle of the mouth?
Which muscle is primarily responsible for lifting the angle of the mouth?
- Zygomaticus Minor
- Risorius
- Depressor Anguli Oris
- Levator Anguli Oris (correct)
Which muscle is known for depressing the angle of the mouth?
Which muscle is known for depressing the angle of the mouth?
- Zygomaticus Minor
- Depressor Anguli Oris (correct)
- Zygomaticus Major
- Levator Labi Superiores
What is the primary action of the Risorius muscle?
What is the primary action of the Risorius muscle?
- Smile and draw the corners of the mouth laterally (correct)
- Lift the angle of the mouth
- Depress the lip
- Support the cheek
Which muscle is referred to as the 'smile' muscle?
Which muscle is referred to as the 'smile' muscle?
Which of the following muscles is primarily involved in raising the upper lip?
Which of the following muscles is primarily involved in raising the upper lip?
Flashcards
Zygogmaticus Major
Zygogmaticus Major
A muscle that elevates the corners of the mouth, contributing to smiling.
Zygogmaticus Minor
Zygogmaticus Minor
A muscle that subtly elevates the corners of the mouth.
Risorius
Risorius
A muscle that pulls the mouth to the side, creating a grin.
Levator Anguli Oris
Levator Anguli Oris
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Levator Labii Superioris
Levator Labii Superioris
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Depressor Anguli Oris
Depressor Anguli Oris
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Depressor Labii Inferioris
Depressor Labii Inferioris
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Study Notes
Facial Muscles Involved in Smiling
- Zygomaticus Major (musculus zygomaticus major): A major muscle of smiling, pulling the corners of the mouth upward and outward.
- Zygomaticus Minor (musculus zygomaticus minor): Contributes to smiling, pulling the upper lip backward and upward.
- Risorius (musculus risorius): Pulls the corner of the mouth outwards.
- Angle of the Mouth: The area where the mouth curves.
- Levator Anguli Oris (musculus levator anguli oris): Elevates the angle of the mouth.
- Levator Labii Superioris (musculus levator labi superiores): Raises the upper lip.
- Depresses the angle of the mouth: Specific muscles lower the angle of the mouth.
- Depressor Anguli Oris (musculus depressor anguli oris): Lowers the angle of the mouth.
- Depressor Labii Inferiores (musculus depressor labii inferiores): Lowers the lower lip.
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