Facial Muscles Anatomy Quiz

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Questions and Answers

What is the primary action of the Occipital Belly muscle?

  • Moves the eyebrows medially and downward
  • Pulls the scalp backward (correct)
  • Elevates the eyebrows
  • Closes the eyelids

Which muscle is responsible for closing the eyelids tightly, as in blinking?

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

What is the insertion of the Corrugator Supercilii muscle?

  • Medial border of the orbit
  • Skin and subcutaneous tissue of the eyebrows and forehead
  • Aponeurosis epicraneal
  • Above the middle of the supraorbital margin and eyebrow arch (correct)

Which of these muscles is NOT a muscle of facial expression?

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

What is the primary action of the Orbicularis Oculi?

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

Which muscle pulls the skin up over the bridge of the nose, expressing disdain or displeasure?

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

Which muscle is responsible for compressing the cheek against the teeth, helping to keep food between teeth during chewing?

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

Which muscle lowers the corner of the mouth, contributing to a sad or frowning expression?

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

Which muscle plays a crucial role in closing the mouth, constricting and protruding the lips, as in kissing or blowing?

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

The pterygomandibular raphe is a significant attachment point for which muscle?

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

Which action is NOT performed by the Platysma muscle?

<p>Raises the corner of the mouth (A)</p> Signup and view all the answers

Which muscle helps to widen the nasal opening, creating a flared nostril appearance, as seen with effort or anger?

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

Which muscle is responsible for raising the upper lip?

<p>Levator labii superioris (D)</p> Signup and view all the answers

Which muscle originates from the infraorbital margin of the maxilla (cheekbone) and inserts at the corner of the mouth, helping to raise the corner of the mouth?

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

Which muscle is NOT directly involved in controlling the movement of the mouth or lips?

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

Flashcards

Occipitofrontal

A muscle that elevates the eyebrows and wrinkles the forehead.

Orbicularis Oculi

Muscle that closes the eyelids tightly and smoothly.

Corrugator Supercilii

Muscle that pulls eyebrows medially and downward, causing vertical wrinkles.

Frontal Belly

Part of the occipitofrontal muscle that pulls the scalp backward.

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Aponeurosis epicraneal

A connective tissue structure where some facial muscles originate.

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Procer muscle

Muscle that pulls skin over the nose, expressing disdain.

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Nasal muscle

Pulls the nose downward and widens nasal opening during anger.

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Orbicularis oris

Circular muscle that closes and protrudes the lips.

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Levator labii superioris

Muscle that raises the upper lip.

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Buccinator

Compresses the cheek against teeth, aids food movement.

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Levator anguli oris

Muscle that raises the corner of the mouth.

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Depressor anguli oris

Lowers the corner of the mouth.

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Depressor labii inferioris

Lowers the lower lip.

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Mentalis muscle

Raises the chin skin; associated with pouting.

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Facial nerve (CN VII)

Nerve innervating all facial muscles.

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