LECTURE: Oral Cavity

Question 1

between teeth/gums and lips/cheek

Answer 1

vestibule

Question 2

within dental arches

Answer 2

oral cavity proper

Question 3

posterior midline extension of soft palate

Answer 3

uvula

Question 4

_________ are anterior and posterior boundaries of tonsilar bed

Answer 4

palatoglossal and palatopharyngeal arches/folds

Question 5

lymphoid tissue in tonsilar bed

Answer 5

palatine tonsils

Question 6

midline fold of mucosa under tongue

Answer 6

lingual frenulum

Question 7

midline folds of mucosa between gingivae and lips

Answer 7

labial frenulae

Question 8

formed by sublingual salivary gland on either side

Answer 8

sublingual fold

Question 9

What has an opening to the submandibular duct?

Answer 9

Sublingual caruncle

Question 10

Opening of parotid duct opposite 2nd maxillary molar

Answer 10

parotid papilla

Question 11

What blood vessels supply blood to the lips?

Answer 11

Superior and inferior labial branches of facial

Question 12

Terminal branch of inferior alveolar artery that supplies chin

Answer 12

mental artery

Question 13

Branch of maxillary artery that supplies cheek

Answer 13

buccal artery

Question 14

Describe all the features in the diagram

Answer 14

Question 15

Describe the distribution of general sensation to each colored area

Answer 15

Question 16

The hard palate has _____ for nerves and arteries.

Answer 16

greater and lesser palatine foramina

Question 17

Sensation from the mucosa of the hard palate is handled by ____, whereas the innervation of the palatine (mucous) glands is via

Answer 17

• sensation of hard palate: maxillary division of trigeminal nerve (V2)
• innervation of the palatine (mucous) glands: facial nerve (CN VII)

Question 18

An opening in the anterior hard palate, from which the nasopalatine nerve and septal artery emerge.

Answer 18

incisive foramen

Question 19

A fibromuscular structure with a membranous aponeurosis and associated muscles.

Answer 19

soft palate

Question 20

Action of levator veli palatini and tensor veli palatini (already discussed with nasopharynx)

Answer 20

elevate and tense the soft palate with swallowing, respectively

Question 21

This muscle helps to approximate soft palate to oropharynx during swallowing & is innervated by vagus nerve (CN X).

Answer 21

palatoglossus muscle

Question 22

This muscle runs from the hard and soft palate to the posterior aspect of thyroid cartilage and pharyngeal constrictor. It also helps to close the nasopharynx during swallowing and is innervated by vagus nerve (CN X).

Answer 22

palatopharyngeus muscle

Question 23

The _______ is located between the palatoglossal and palatopharyngeal arches.

Answer 23

palatine tonsil

Question 24

This muscle elevates the uvula. It is innervated by vagus nerve (CN X).

Answer 24

musculus uvulue

Question 25

The superior pharyngeal constrictor and buccinator both insert into the \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.

Answer 25

pterygomandibular raphe

Question 26

Describe the arterial supply to the teeth

Answer 26

Question 27

Describe the innervation of teeth

Answer 27

Question 28

Answer 28

Question 29

Most numerous, conical papillae. Handle general sensory information but no taste buds.

Answer 29

filiform papillae

Question 30

Mushroom-shaped papillae which appear as pink or red spots scattered among the filiform papillae. Contain taste buds.

Answer 30

fungiform papillae

Question 31

Fold-like (leaf-like) papillae along sides of tongue. Contain taste receptors.

Answer 31

foliate papillae

Question 32

Large papillae that form a “V-shaped” pattern at the back of the tongue. The walls of these are studded with taste buds. Ducts of serous glands open into trenches as well to prevent blockage.

Answer 32

vallate papillae

Question 33

Located between the body and root of the tongue, it is the site of descent of the thyroid tissue

Answer 33

terminal sulcus

Question 34

General sensation from anterior 2/3 of tongue is handled by

Answer 34

the mandibular division of the trigeminal nerve (V3), specifically through its lingual branch

Question 35

Taste from anterior 2/3 of tongue is handled by

Answer 35

facial nerve (VII), specifically through chorda tympani.

Question 36

Both taste and general sensation and taste from posterior 1/3 of tongue handled by

Answer 36

glossopharyngeal nerve (CN IX)

Question 37

General sensation and some taste information from area of posterior tongue near epiglottis carried by …

Answer 37

vagus nerve (CN X)

Question 38

What are the extrinsic muscles of the tongue? (4)

Answer 38

1. genioglossus 2. hyoglossus 3. styloglossus 4. palatoglossus

Question 39

Attachment/Action/Innervation of genioglossus

Answer 39

* **Attachments**: from the mental spine of the mandible to the tongue and hyoid bone. * **Action**: it depresses and protrudes the tongue. * **Innervation**: hypoglossal nerve (cranial nerve XII).

Question 40

Attachment/Action/Innervation of hyoglossus

Answer 40

* **Attachments**: from the lateral aspect of the hyoid bone to the side and inferior aspect of the tongue * **Action**: it depresses and retracts the tongue. * **Innervation**: hypoglossal nerve (cranial nerve XII).

Question 41

Attachment/Action/Innervation of styloglossus

Answer 41

* **Attachments**: from the styloid process and styloid ligament to the side of the tongue posteriorly * **Action**: it elevates and retracts the tongue. * **Innervation**: hypoglossal nerve (cranial nerve XII).

Question 42

Attachment/Action/Innervation of palatoglossus

Answer 42

* **Attachments**: from the palatine aponeurosis to the side of the tongue * **Action**: it approximates the back of the tongue with soft palate during swallowing. * **Innervation**: vagus nerve (cranial nerve X)

Question 43

Answer 43

Question 44

What are the intrinsic muscles of the tongue?

Answer 44

* Superior longitudinal muscle fibers. * Inferior longitudinal muscle fibers. * Transverse and vertical muscle fibers (in same layer).

Question 45

Which muscles change the shape of the tongue with speech and food manipulation?

Answer 45

the intrinsic muscles of the tongue

Question 46

The intrinsic muscles of the tongue are innervated by which nerve?

Answer 46

CN XII

Question 47

Answer 47

Question 48

Which glands get their parasympathetic innervation from glossopharyngeal nerve (via lesser petrosal nerve) and arterial supply is from branches of external carotid and superficial temporal arteries?

Answer 48

parotid gland

Question 49

Which glands get their parasympathetic innervation from facial nerve (CN VII) via chorda tympani and arterial supply is from submental branch of facial artery?

Answer 49

submandibular glands

Question 50

Which glands get their parasympathetic innervation from facial nerve (via chorda tympani) and arterial supply is from lingual and facial arteries with venous drainage is via lingual vein?

Answer 50

sublingual glands

Question 51

What are the contents of the sublingual space?

Answer 51

* Sublingual salivary gland. * Lingual nerve (and submandibular ganglion). * Submandibular duct. * Hypoglossal nerve (CN XII).

Question 52

Lymph from the upper lip and lateral parts of the lower lip drains to the \_\_\_\_\_\_\_\_\_\_\_\_\_

Answer 52

submandibular nodes

Question 53

Lymph from the middle part of the lower lip drains the

Answer 53

submental nodes

Question 54

Lymph from the tongue drains to where?

Answer 54

the submental, submandibular and superior and inferior deep cervical lymph nodes, including the Jugulodigastric and jugulo-omohyoid nodes

Question 55

Extensive communications of lymphatic drainage occur across the ______ of the tongue.

Answer 55

midline