Anatomy of the Tongue and Palate

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Which nerve is responsible for the innervation of the palatoglossus muscle?

Vagus nerve (X) (correct)

Mandibular nerve (V3)

Hypoglossal nerve (XII)

Trochlear nerve (IV)

Which bony structure forms the floor of the oral cavity?

Sphenoid bone

Maxillae

Mylohyoid muscle (correct)

Palatine bones

What are the two parts of the palatine bone that contribute to the roof of the oral cavity?

Pterygoid processes and spines

Horizontal plate and pyramidal process (correct)

Styloid process and inferior aspect of the petrous part

Alveolar and palatine processes

What is the function of the tensor veli palatini muscle?

Tensing the soft palate Signup and view all the answers

Which bones form the anterior two-thirds of the hard palate?

Two palatine processes Signup and view all the answers

What is the function of the muscles associated with the styloid process and inferior aspect of the petrous part of the temporal bone?

Associated with the soft palate Signup and view all the answers

What forms the anterior three-quarters of the hard palate?

Maxillae Signup and view all the answers

What is the function of the hard palate?

Separates the oral cavity from the nasal cavities Signup and view all the answers

What is the name of the small oval elevation at the anterior end of the palatine raphe?

Incisive papilla Signup and view all the answers

What is the name of the bone that consists of a body and two rami?

Mandible Signup and view all the answers

What is the name of the small U-shaped bone in the neck?

Hyoid bone Signup and view all the answers

What is the name of the folds present on the mucosa of the hard palate?

Palatine rugae Signup and view all the answers

What is the collective term for the nodules of lymphoid tissue in the submucosa of the pharyngeal surface of the tongue?

Lingual tonsil Signup and view all the answers

What is the function of the intrinsic muscles of the tongue?

To change the shape of the tongue for speech, eating, and swallowing Signup and view all the answers

What is the median structure that separates the tongue into left and right halves?

Median sagittal septum Signup and view all the answers

What is the nerve that innervates the palatoglossus muscle?

Vagus nerve (X) Signup and view all the answers

What is the purpose of the extrinsic muscles of the tongue?

To protrude, retract, depress, and elevate the tongue Signup and view all the answers

What is the characteristic of the pharyngeal surface of the tongue?

It is irregular in contour due to lymphoid tissue Signup and view all the answers

What is the primary function of the genioglossus muscle?

Depresses the central part of the tongue and causes it to protrude Signup and view all the answers

Which nerve innervates the styloglossus muscle?

Hypoglossal nerve [XII] Signup and view all the answers

What is the main function of the palatoglossus muscle?

Elevates the tongue and moves the palatoglossal arch toward the midline Signup and view all the answers

What is the primary artery that supplies the tongue?

Lingual artery Signup and view all the answers

Where does the lymph from the oral part of the tongue drain directly?

Deep cervical nodes Signup and view all the answers

What is the function of the soft palate?

Acts as a valve to separate the nasopharynx from the oropharynx Signup and view all the answers

What is the function of the Tensor veli palatini muscle?

Tenses the soft palate and opens the pharyngotympanic tube Signup and view all the answers

Which nerve is responsible for the innervation of the Levator veli palatini muscle?

Vagus nerve (X) Signup and view all the answers

What is the function of the Palatopharyngeus muscle?

Depresses the palate and moves the palatopharyngeal arch toward the midline Signup and view all the answers

Which muscle is responsible for elevating and retracting the uvula?

Musculus uvulae Signup and view all the answers

Where is the superficial part of the submandibular gland located?

Outside the oral cavity, against the submandibular fossa Signup and view all the answers

What is the function of the Palatoglossus muscle?

Depresses the palate and moves the palatoglossal arch toward the midline Signup and view all the answers