Mastication Muscles Anatomy
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Questions and Answers

Which muscle is responsible for elevating the mandible during chewing?

  • Masseter muscle (correct)
  • Lateral pterygoid muscle
  • Temporal muscle
  • Medial pterygoid muscle
  • Which muscle is located deep to the zygomatic arch and has three layers?

  • Temporal muscle
  • Masseter muscle (correct)
  • Lateral pterygoid muscle
  • Medial pterygoid muscle
  • Which muscle has its origin on the zygomatic arch and inserts into the coronoid process and the anterior border of the ramus of the mandible?

  • Medial pterygoid muscle
  • Masseter muscle (correct)
  • Lateral pterygoid muscle
  • Temporal muscle
  • Which muscle is responsible for lateral excursion of the mandible?

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

    Which muscle is responsible for medial excursion of the mandible?

    <p>Medial pterygoid muscle</p> Signup and view all the answers

    Which muscle plays a role in retracting the mandible?

    <p>Temporal muscle</p> Signup and view all the answers

    The temporal muscle has its origin from which of the following structures?

    <p>inferior temporal line</p> Signup and view all the answers

    Which nerve innervates the lateral pterygoid muscle?

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

    What is the function of the medial pterygoid muscle?

    <p>Protrude the mandible</p> Signup and view all the answers

    Which artery is located between the superficial and deep layers of the temporalis fascia?

    <p>Superficial temporal artery</p> Signup and view all the answers

    The lateral pterygoid muscle is responsible for which action?

    <p>Protruding the mandible</p> Signup and view all the answers

    Which structure does the medial pterygoid muscle have its origin from?

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

    Innervation of the temporal muscle is provided by which nerve?

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

    Which nerve provides innervation to the lateral pterygoid muscle?

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

    Where does the temporal muscle insert?

    <p>Anterior border of mandibular ramus</p> Signup and view all the answers

    What forms the roof of the oral cavity?

    <p>Hard and soft palates</p> Signup and view all the answers

    Where is the vestibule of the oral cavity located?

    <p>Externally by gums and teeth</p> Signup and view all the answers

    What is the function of the orbicularis oris muscle?

    <p>Surrounding the oral orifice</p> Signup and view all the answers

    What gives the reddish color to the vermilion border of the lips?

    <p>Blood vessels</p> Signup and view all the answers

    What separates the vestibule from the oral cavity proper when the teeth are apposed?

    <p>Hard and soft palates</p> Signup and view all the answers

    What forms the floor of the oral cavity?

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

    Which structure connects each lip to the gum?

    <p>Median labial frenulum</p> Signup and view all the answers

    Where are the largest buccal mucous glands located?

    <p>External to buccinator, around parotid duct</p> Signup and view all the answers

    What is the composition of gums (gingivae)?

    <p>Orthokeratinized stratified squamous epithelium</p> Signup and view all the answers

    What is the function of the hard palate?

    <p>Formed by palatine processes of maxillae and horizontal plates of palatine bones</p> Signup and view all the answers

    What forms a narrow, low ridge in the hard palate?

    <p>Palatine raphe</p> Signup and view all the answers

    Which artery supplies the lips with blood?

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

    Where do the submandibular lymph nodes drain from the lips?

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

    What provides sensory innervation to the lower lip?

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

    Which nerve provides sensory innervation to the upper lip?

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

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