Facial Muscles Quiz

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Questions and Answers

Which muscle is responsible for the eyebrow movement associated with expressing concern?

  • Occipitofrontal
  • Frontal Belly
  • Corrugator Supercilii (correct)
  • Orbicularis Oculi

What is the primary action of the Occipital Belly?

  • Elevating the eyebrows
  • Wrinkling the forehead
  • Closing the eyelids
  • Pulling the scalp backward (correct)

Which muscle is responsible for the smooth closure of the eyelids?

  • Orbicularis Oculi (palpebral portion) (correct)
  • Corrugator Supercilii
  • Occipitofrontal
  • Orbicularis Oculi (orbital portion)

Which of these muscles is NOT directly involved in facial expression?

<p>Occipital Belly (A)</p> Signup and view all the answers

What is the insertion point of the Occipitofrontal muscle?

<p>Skin and subcutaneous tissue of the eyebrows and forehead (C)</p> Signup and view all the answers

Which muscle is primarily responsible for closing the mouth?

<p>Orbicularis oris (A)</p> Signup and view all the answers

Which muscle is responsible for pulling the skin up over the bridge of the nose, conveying an expression of disdain?

<p>Procer (C)</p> Signup and view all the answers

Which muscle(s) are involved in widening the nasal opening, as seen during effort or anger?

<p>Nasal (D)</p> Signup and view all the answers

Which muscle helps to keep food between the occlusal surfaces during chewing?

<p>Buccinator (D)</p> Signup and view all the answers

Which muscle is most directly responsible for raising the corner of the mouth, often associated with a smile?

<p>Levator anguli oris (B)</p> Signup and view all the answers

Which muscle is responsible for lowering the lower lip, often seen in expressions of sadness or doubt?

<p>Depressor labii inferioris (C)</p> Signup and view all the answers

Which muscle is involved in creating the expression of 'pouting' or 'protruding' the lips?

<p>Orbicularis oris (D)</p> Signup and view all the answers

Which muscle plays a role in the stiffness of the lower face and neck, often associated with stress?

<p>Platysma (D)</p> Signup and view all the answers

All muscles of the face are innervated by which cranial nerve?

<p>Facial nerve (CN VII) (C)</p> Signup and view all the answers

Flashcards

Occipitofrontal Muscle

Muscle that elevates eyebrows, wrinkles forehead, pulls scalp forward.

Frontal Belly

Part of the occipitofrontal muscle; pulls scalp backward to enhance frontal movement.

Orbicularis Oculi

Muscle that closes eyelids; has smooth (palpebral) and tight (orbital) portions.

Corrugator Supercilii

Muscle that moves eyebrows medially and downward, creating vertical forehead wrinkles.

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Aponeurosis Epicraneal

Tendon-like structure linking muscles of the scalp, front, and back.

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Procer

Muscle that pulls skin over the nose bridge, expressing disdain.

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Nasal Muscle

Muscle that widens the nasal opening and raises the upper lip.

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Orbicularis Oris

Muscle that closes and protrudes the lips, crucial for kissing.

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Levator Labii Superioris

Muscle that raises the upper lip, aiding facial expression.

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Buccinator

Muscle that compresses cheeks, aiding in chewing and blowing.

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Levator Anguli Oris

Muscle responsible for raising the corner of the mouth.

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Depressor Anguli Oris

Muscle that lowers the corners of the mouth, creating a frown.

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Depressor Labii Inferioris

Muscle that lowers the lower lip for expressions.

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Mentalis

Muscle that elevates and protrudes the chin area.

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Platysma

Muscle that lowers the mandible and stiffens lower face.

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