Questions and Answers
What is the function of the Buccinator muscle?
What is another name for the Depressor Labii Inferioris?
Quadratus labii inferioris
What does the Levator Angulioris muscle do?
Raises the angle of the mouth and draws it inward
What action does the Levator Labii Inferioris perform?
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Where is the Mentalis muscle located?
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What is the main function of the Orbicularis Oris?
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What does the Risorius muscle do?
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What is the function of the Triangularis muscle?
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What is the location of the Zygomaticus Major?
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Where do the Zygomaticus Minor muscles extend from?
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Study Notes
Muscles of the Mouth
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Buccinator:
- Thin, flat muscle in the cheek.
- Compresses cheeks and expels air (e.g., whistling).
- Located between the upper and lower jaw.
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Depressor Labii Inferioris:
- Also known as quadratus labii inferioris.
- Surrounds the lower lip and draws it to one side.
- Situated in the lower lip.
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Levator Anguli Oris:
- Also referred to as caninus.
- Raises the angle of the mouth and draws it inward.
- Found in the upper lip.
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Levator Labii Superioris:
- Known as quadratus labii superioris.
- Surrounds the upper lip, elevating it and dilating nostrils (indicates distaste).
- Located around the upper lip.
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Mentalis:
- Muscle that elevates the lower lip and raises/wrinkles the chin skin.
- Positioned in the chin area.
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Orbicularis Oris:
- Flat band encircling the upper and lower lips.
- Compresses, contracts, puckers, and wrinkles the lips (e.g., during kissing).
- Located around the mouth.
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Risorius:
- Muscle that draws the corners of the mouth out and back (used when grinning).
- Located at the corners of the mouth.
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Triangularis:
- Muscle that pulls down the corners of the mouth.
- Extends alongside the chin.
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Zygomaticus Major/Minor:
- Major: Located at the outer cheek.
- Minor: Extends from the zygomatic bone to the angle of the mouth.
- Both muscles elevate the lip (e.g., during smiling or laughing).
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Description
This quiz features flashcards that help you learn the key muscles of the mouth, including their names, definitions, and locations. Ideal for students studying anatomy, this resource is perfect for exam preparation and quick revision. Test your knowledge with these informative cards!
