Role of Facial Muscles in Human Physiology
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Questions and Answers

Where are facial muscles located?

  • In the superficial fascia of the face (correct)
  • Attached to hair follicles
  • Embedded in the bones of the skull
  • In the masticatory muscles
  • What differentiates facial muscles from masticatory muscles?

  • Attachment to hair follicles
  • Location in the face
  • Origin from bones of the skull
  • Insertion point (into skin or other facial muscles) (correct)
  • How does lymph drainage from the forehead and anterior part of the face occur?

  • Parotid lymph nodes
  • Submental lymph nodes
  • Buccal lymph nodes
  • Submandibular lymph nodes (correct)
  • What is the drainage pathway for lymph from the lateral parts of the eyelids?

    <p>Parotid lymph nodes</p> Signup and view all the answers

    What can result from a thrombosis of the facial vein in the danger triangle of the face?

    <p>Cavernous sinus thrombosis</p> Signup and view all the answers

    Where do facial muscles typically arise from?

    <p>Bones of the skull</p> Signup and view all the answers

    What is the primary biological role of the facial muscles?

    <p>Regulate the facial orifices</p> Signup and view all the answers

    Which nerve supplies the facial muscles?

    <p>Facial nerve</p> Signup and view all the answers

    What is the secondary by-product of the fine control of facial orifices?

    <p>Facial expressions</p> Signup and view all the answers

    Which muscle is considered the sphincter muscle of the eyelids?

    <p>Orbicularis oculi</p> Signup and view all the answers

    What is the role of auricular muscles in humans?

    <p>Operate the external ear</p> Signup and view all the answers

    Which muscle elevates the upper eyelid but is generally considered an extraocular muscle?

    <p><strong>Levator palpebrae superioris</strong></p> Signup and view all the answers

    What is the significance of compression action in suckling in neonates?

    <p>Aids in producing sucking</p> Signup and view all the answers

    What can damage to the facial nerve in the internal acoustic meatus result in?

    <p>Distortion of the face</p> Signup and view all the answers

    What is a characteristic sequelae of damage to the facial nerve causing facial muscle paralysis?

    <p>Expressionless, masklike side of the face</p> Signup and view all the answers

    What type of lesion is indicated by inability to close the eyelids and drooping of the lower eyelid?

    <p>Lower motor neuron lesion</p> Signup and view all the answers

    What happens when there is involvement of the pyramidal tracts related to the facial nerve?

    <p>Normal upper part of the face</p> Signup and view all the answers

    Where does the facial nerve divide into its five terminal branches?

    <p>Substance of the parotid salivary gland</p> Signup and view all the answers

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