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

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

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

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

<p>Cranial nerves VII and IX (C)</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 (A)</p> Signup and view all the answers

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

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

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

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

What is a potential cause of dysgeusia?

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

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

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

Which nerve provides parasympathetic innervation to the parotid gland?

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

Which nerve innervates the stapedius muscle in the middle ear?

<p>Facial nerve (A)</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 (C)</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 (D)</p> Signup and view all the answers

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

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

What is the sensory innervation of the auriculotemporal nerve?

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

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

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

What is the primary function of the greater petrosal nerve?

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

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

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

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