Oral Cavity and Palate
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Questions and Answers

Which cranial nerve provides GSE (motor) innervation to the soft palate?

  • Vagus nerve (X)
  • Facial nerve (VII)
  • Glossopharyngeal nerve (IX)
  • Hypoglossal nerve (XII) (correct)

Which nerve is responsible for taste sensation from the palate?

  • Lingual nerve (V3)
  • Facial nerve (VII) (correct)
  • Glossopharyngeal nerve (IX)
  • Trigeminal nerve (V2)

Which nerve innervates the glands of the palate with parasympathetic fibers?

  • Vagus nerve (X)
  • Facial nerve (VII)
  • Glossopharyngeal nerve (IX)
  • Trigeminal nerve (V2) (correct)

Which nerve carries sensory fibers to the anterior two-thirds of the tongue?

<p>Lingual nerve (V3) (B)</p> Signup and view all the answers

Which nerve innervates the submandibular gland?

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

Which cranial nerve is responsible for GSA innervation of the palate primarily through the greater and lesser palatine nerves?

<p>Trigeminal nerve (V2) (A)</p> Signup and view all the answers

Where do the majority of blood supply to the palate come from?

<p>Greater and lesser palatine arteries (D)</p> Signup and view all the answers

Which artery primarily supplies blood to the floor of the oral cavity and tongue?

<p>Lingual artery (D)</p> Signup and view all the answers

Where are the preganglionic parasympathetic nerve cell bodies located for the submandibular and sublingual salivary glands?

<p>Superior salivatory nucleus in the Pons (A)</p> Signup and view all the answers

Which nerve carries preganglionic parasympathetic fibers to the submandibular ganglion?

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

Where do the deep and dorsal lingual veins drain to?

<p>Internal jugular vein (IJV) (D)</p> Signup and view all the answers

Which cranial nerve is responsible for the motor innervation of the genioglossus muscle?

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

In which pharyngeal arch is the posterior 1/3 of the tongue formed?

<p>3rd/4th pharyngeal arches (B)</p> Signup and view all the answers

Which cranial nerve provides motor innervation to the hyoglossus muscle?

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

What causes the tongue to deviate toward the injured side in a lesion of the hypoglossal nerve (CN XII)?

<p>Paralysis of the ipsilateral genioglossus muscle (A)</p> Signup and view all the answers

Which cranial nerve provides motor innervation to the palatoglossus muscle involved in elevating the posterior tongue during swallowing?

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

What makes up the oral cavity

<p>A &amp; D (C)</p> Signup and view all the answers

Match the following tongue muscles with their innervating nerve:

<p>Genioglossus = Hypoglossal nerve (CN XII) Hyoglossus = Hypoglossal nerve (CN XII) Styloglossus = Hypoglossal nerve (CN XII) Palatoglossus = Vagus nerve (CN X)</p> Signup and view all the answers

Match the following tongue muscle actions with their description:

<p>Protrude, retract, depress, and elevate the tongue = Extrinsic muscles Contribute to precision movements of the tongue required for speech, eating, and swallowing = Intrinsic muscles</p> Signup and view all the answers

Match the following structures with their description related to the tongue:

<p>Hard palate and soft palate = Body=anterior two-thirds, Root=posterior one-third Terminal sulcus = Separates anterior two-thirds from posterior one-third of the tongue Foramen cecum = Defines the apex of the terminal sulcus</p> Signup and view all the answers

Match the following actions with their corresponding muscle involved in tongue movement:

<p>Protrusion of the tongue in midline during hypoglossal nerve test = Genioglossus muscle Elevating the posterior tongue during swallowing = Palatoglossus muscle</p> Signup and view all the answers

Match the following nerve types with their functions in tongue innervation:

<p>Hypoglossal nerve (CN XII) = Provides motor innervation to most tongue muscles except Palatoglossus Vagus nerve (CN X) = Innervates Palatoglossus muscle</p> Signup and view all the answers

Match the following soft palate muscles with their respective functions:

<p>Palatoglossus = Elevates tongue Palatopharyngeus = Elevates pharynx Tensor veli palatini = Opens auditory tube when swallowing Levator veli palatini = Elevates palate</p> Signup and view all the answers

Match the following parts of the tongue with their innervations:

<p>Anterior two-thirds = Mandibular division of Trigeminal (CNV3) Posterior one-third motor innervation (palatoglossus) = Vagus (CNX) Taste sensation from the posterior tongue = Glossopharyngeal nerve (CN IX) Motor innervation to all intrinsic and extrinsic muscles of the tongue = Hypoglossal nerve (CN XII)</p> Signup and view all the answers

Match the major salivary glands with their associated features:

<p>Submandibular gland = Drain by Wharton's duct into the oral cavity Sublingual gland = Lies inferior to the tongue Parotid gland = Innervated by glossopharyngeal nerve (CN IX) Submandibular ganglion = Preganglionic parasympathetic fibers from facial nerve (CN VII)</p> Signup and view all the answers

Match the following neurovascular structures with their locations in the oral cavity:

<p>Inferior alveolar artery = Supplies mandibular teeth and associated structures Facial artery = Supplies blood to the lips and oral muscles Lingual nerve = Carries general sensory fibers to the anterior two-thirds of the tongue Greater palatine nerve = Provides sensory innervation to the hard palate</p> Signup and view all the answers

Match the functional anatomy descriptions with their corresponding structures:

<p>Palatine process of maxilla and horizontal plates of palatine bones = Form the hard palate's anterior two-thirds Expanded tendon of tensor veli palatini (palatine aponeurosis) = Strengthens the soft palate's posterior one-third Incisive, greater, and lesser palatine foramina = Anatomical features of the hard palate Palatoglossal folds = Boundaries of the oral cavity proper extending posteriorly</p> Signup and view all the answers

Match the following salivary gland structure with its description:

<p>Sublingual gland = Drains into the sublingual folds in the floor of the mouth Submandibular gland = Runs superior to the mylohyoid muscle, deep to sublingual gland Lingual nerve = Passes up to the anterior two-thirds of the tongue Submandibular duct (Wharton’s duct) = Anterior to the lingual nerve</p> Signup and view all the answers

Match the following nerve type with its function in palate innervation:

<p>GVE = Provides parasympathetic innervation from CN V2 via pterygopalatine ganglion SA = Transmits taste sensation from CN VII SOMATIC = Greater and lesser palatine nerves (V2) for general sensory afferents GSE = Pharyngeal plexus (CN X) for soft palate motor innervation</p> Signup and view all the answers

Match the following nerve with its role in innervating the glands of the palate:

<p>CN V2 = Provides parasympathetic innervation to palate glands via pterygopalatine ganglion Deep petrosal nerve = Supplies sympathetic innervation to glands of the palate Greater and lesser palatine nerves (V2) = Primary source of GSA innervation to the palate Pharyngeal plexus (CN X) = Responsible for GSE to the soft palate except tensor veli palatini muscle</p> Signup and view all the answers

Match the pharyngeal arches with the parts of the tongue they form:

<p>1st pharyngeal arch = Anterior 2/3 of the tongue 3rd and 4th pharyngeal arches = Posterior 1/3 of the tongue</p> Signup and view all the answers

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