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

Which vessel supplies the majority of blood to the scalp?

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

What type of joint is the temporomandibular joint?

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

What movement dislocates the temporomandibular joint?

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

Which ligament helps prevent posterior dislocation of the mandible?

<p>TMJ-lateral ligament (C)</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 (B)</p> Signup and view all the answers

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

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

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

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

Which muscle is responsible for elevating the mandible during mastication?

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

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

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

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