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Oral Sensory Disorders and Innervation of the Orofacial Region
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Oral Sensory Disorders and Innervation of the Orofacial Region

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Questions and Answers

Which nerve innervates both the muscles of mastication and the entire face?

  • Glossopharyngeal nerve (IX)
  • Facial nerve (VII)
  • Vagus nerve (X)
  • Trigeminal nerve (V) (correct)
  • Which part of the face is innervated by the mesencephalic nucleus of the Trigeminal nerve?

  • Auditory tube
  • Top of the scalp
  • Lower margin of the mandible
  • Scalp (correct)
  • Which nerve is responsible for innervating the lacrimal gland and skin of the frontal region?

  • Glossopharyngeal nerve (IX)
  • Vagus nerve (X)
  • Trigeminal nerve (V) (correct)
  • Facial nerve (VII)
  • Which division of the Trigeminal nerve is associated with the Foramen rotundum?

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

    Which part of the face is innervated by the infraorbital nerve?

    <p>Upper row of teeth</p> Signup and view all the answers

    Which autonomic 'hitchhiker' nerves are associated with the Trigeminal nerve?

    <p>Cranial nerves VII and IX</p> Signup and view all the answers

    Where are taste buds located in the human body?

    <p>On the tongue, soft palate, pharynx, larynx, and upper third of esophagus</p> Signup and view all the answers

    How many taste-receptor cells can a taste bud consist of?

    <p>100 cells</p> Signup and view all the answers

    Which nerve transmits taste-related impulses to the brain post-central gyrus?

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

    What is a potential cause of dysgeusia?

    <p>Liver failure</p> Signup and view all the answers

    Which drug is NOT listed as a potential cause of dysgeusia?

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

    In addition to liver failure, which of the following systemic diseases can lead to dysgeusia?

    <p>Diabetes mellitus</p> Signup and view all the answers

    Which nerve is responsible for the taste sensation of the anterior two-thirds of the tongue?

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

    Which nerve provides parasympathetic innervation to the parotid gland?

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

    Damage to which nerve can result in loss of taste sensation on the posterior one-third of the tongue?

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

    Which nerve innervates the stapedius muscle in the middle ear?

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

    What is the function of the greater petrosal nerve carried by the facial nerve?

    <p>Innervates the lacrimal gland</p> Signup and view all the answers

    Which cranial nerve is responsible for sensing general (pain) information from the post 1/3 of the tongue?

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

    Which nerve carries mainly the motor fibers of the trigeminal nerve?

    <p>Inferior alveolar nerve</p> Signup and view all the answers

    What is the sensory innervation of the auriculotemporal nerve?

    <p>Tympanic membrane</p> Signup and view all the answers

    Which nerve provides sensory innervation to the lower row of the teeth and lower lip?

    <p>Inferior alveolar nerve</p> Signup and view all the answers

    Where do the motor branches of the lingual nerve provide innervation?

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

    What is the primary function of the greater petrosal nerve?

    <p>Innervating lacrimal glands</p> Signup and view all the answers

    Which nucleus is responsible for somatomotor functions of the facial nerve?

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

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