MSK lec 4 sync
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Questions and Answers

Which muscle is responsible for closing the eyelids?

  • Frontalis
  • Occipitalis
  • Orbicularis oris (correct)
  • Masseter
  • What is the main function of the levator palpebrae superioris muscle?

  • Opening the mouth
  • Closing the eyelids
  • Elevation and retraction of the upper eyelid (correct)
  • Raising the eyebrows
  • Which cranial nerve is primarily responsible for the movement of muscles involved in mastication?

  • Vagus nerve (X)
  • Facial nerve (VII)
  • Trigeminal nerve (V) (correct)
  • Glossopharyngeal nerve (IX)
  • The temporomandibular joint (TMJ) is formed by the articulation of which two bones?

    <p>Mandible and temporal bone</p> Signup and view all the answers

    Which vessel supplies the majority of blood to the scalp?

    <p>External carotid artery</p> Signup and view all the answers

    Which ligament connects the spine of the sphenoid to the ramus of the mandible?

    <p>TMJ-sphenomandibular ligament</p> Signup and view all the answers

    What type of joint is the temporomandibular joint?

    <p>Gliding joint</p> Signup and view all the answers

    What movement dislocates the temporomandibular joint?

    <p>Anterior movement of the head of the mandible</p> Signup and view all the answers

    Which ligament helps prevent posterior dislocation of the mandible?

    <p>TMJ-lateral ligament</p> Signup and view all the answers

    What arteries branch from the brachiocephalic artery for supply to the head and neck?

    <p>Common carotid artery</p> Signup and view all the answers

    Which muscle is responsible for closing the jaw by elevating the mandible?

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

    Which muscle acts to protrude the mandible and depress the chin?

    <p>Lateral pterygoid</p> Signup and view all the answers

    Which muscle is responsible for elevating the mandible during mastication?

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

    What is the main function of the temporomandibular joint (TMJ)?

    <p>Combined hinge and planar movements during mastication</p> Signup and view all the answers

    Which cranial nerve is responsible for innervating the muscles of mastication?

    <p>Trigeminal nerve (V)</p> Signup and view all the answers

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