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?
Which muscle is known for depressing the angle of the mouth?
Which muscle is known for depressing the angle of the mouth?
What is the primary action of the Risorius muscle?
What is the primary action of the Risorius muscle?
Which muscle is referred to as the 'smile' muscle?
Which muscle is referred to as the 'smile' muscle?
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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?
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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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Description
Explore the key facial muscles that play a role in smiling. This quiz covers the anatomy and functions of various muscles involved in producing a smile, including the zygomaticus major and minor, risorius, and others. Test your knowledge on how these muscles contribute to expressions of happiness.
