Muscles of the Mouth Flashcards
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Questions and Answers

What is the function of the Buccinator muscle?

  • Elevates the upper lip
  • Raises and wrinkles the skin of the chin
  • Draws the lower lip to one side
  • Compresses the cheeks and expels air between the lips (correct)

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?

<p>Elevates the upper lip and dilates the nostrils</p> Signup and view all the answers

Where is the Mentalis muscle located?

<p>Chin</p> Signup and view all the answers

What is the main function of the Orbicularis Oris?

<p>Compresses, contracts, puckers, and wrinkles the lips</p> Signup and view all the answers

What does the Risorius muscle do?

<p>Draws the corner of the mouth out and back</p> Signup and view all the answers

What is the function of the Triangularis muscle?

<p>Pulls down the corner of the mouth</p> Signup and view all the answers

What is the location of the Zygomaticus Major?

<p>Outer cheek</p> Signup and view all the answers

Where do the Zygomaticus Minor muscles extend from?

<p>Zygomatic bone to the angle of the mouth</p> Signup and view all the answers

Study Notes

Muscles of the Mouth

  • Buccinator:

    • Thin, flat muscle in the cheek.
    • Compresses cheeks and expels air (e.g., whistling).
    • Located between the upper and lower jaw.
  • Depressor Labii Inferioris:

    • Also known as quadratus labii inferioris.
    • Surrounds the lower lip and draws it to one side.
    • Situated in the lower lip.
  • Levator Anguli Oris:

    • Also referred to as caninus.
    • Raises the angle of the mouth and draws it inward.
    • Found in the upper lip.
  • Levator Labii Superioris:

    • Known as quadratus labii superioris.
    • Surrounds the upper lip, elevating it and dilating nostrils (indicates distaste).
    • Located around the upper lip.
  • Mentalis:

    • Muscle that elevates the lower lip and raises/wrinkles the chin skin.
    • Positioned in the chin area.
  • 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.
  • Risorius:

    • Muscle that draws the corners of the mouth out and back (used when grinning).
    • Located at the corners of the mouth.
  • Triangularis:

    • Muscle that pulls down the corners of the mouth.
    • Extends alongside the chin.
  • 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!

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