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Block 6 > Oral and Nasal Cavities > Flashcards

Oral and Nasal Cavities Flashcards

1
Q

The narrow space between the lips and cheeks and teeth and gums is called….

A

The vestibule

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2
Q

Where does the parotid duct open into the vestibule?

A

At the second upper molar tooth.

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3
Q

What are the anterior and posterior boundaries of the oral cavity?

A

The teeth anteriorly and the tonsillar pillars posteriorly.

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4
Q

What are the formal names of the two tonsillar pillars? What lies between them?

A

The palatine tonsils are between the palatoglossal and palatopharyngeal folds.

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5
Q

What forms the roof and floor of the oral cavity?

A

Hard palate, tongue and sublingual mucosa.

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6
Q

What two nerves innervate the oral cavity roof mucosa? Both are branches of?

A

Post 2/3 = greater palatine nerve
Ant 1/3 = nasopalatine nerve

Both branches of MAXILLARY (V2)

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7
Q

The mucosa of the cheeks is innervated by…. which is a branch of………

A

The buccal nerve- branch of V3 MANDIBULAR

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8
Q

The mucosa of the floor of the oral cavity is innervated by the _____________, a branch of ________.

A

The Lingual Nerve, branch of V3 Mandibular.

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9
Q

The mucosa of the tonsillar pillars is innervated by what nerve?

A

Glossopharyngeal (CN IX)

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10
Q

Where do the submandibular ducts empty?

A

IN the sublingual caruncles on either side of the frenulum.

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11
Q

What lies under the sublingual folds?

A

The sublingual glands.

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12
Q

What structures will you find underlying the tongue?

A

Lingual Nerve
Submandibular Duct
Deep Lingual Artery/ Vein
Sublingual Gland

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13
Q

What divides the tongue into its anterior 2/3 and posterior 1/3? What physical structures are located there?

A

The sulcus terminals

Vallate papilla are located there

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14
Q

What artery runs deep to the hyoglossus muscle?

A

The lingual artery

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15
Q

What nerve does the chord tympani nerve hitchhike with and what does it innervate?

A

Hitchhikes on the Lingual nerve in the infra-temporal fossa and carries SA fibers to the anterior 2/3 of the tongue and PREGANGLIONIC PARASYMPATHETICS to the submandibular ganglion. They synapse with postganglionics there and innervate the submandibular and sublingual glands.

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16
Q

Where do the preganglionic parasympathetic fibers within the chorda tympani (VII) nerve synapse?

A

with Postganglionic neurons in the submandibular ganglion.

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17
Q

What nerve provides GSA and taste from the posterior 2/3 of the tongue?

A

Glossopharyngeal (CN IX)

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18
Q

What nerve provides GSA and taste from mucosa on the epiglottic portion of the tongue?

A

Vagus (CN X)

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19
Q

On a dried skull, what bones form the hard palate/floor of the nasal cavity?

A

The palatine process of the Maxilla and the horizontal process of the Palatine bones.

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20
Q

What nerve runs in the incisive canal/ foramen?

A

The nasopalatine nerve.

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21
Q

WHat muscle is located within the soft palate and forms the bulk of the uvula?

A

The musculus uvulae

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22
Q

What runs in the space between the superior and middle constrictor muscles?

A

Glossopharyngeal nerve

Stylopharyngeus muscle

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23
Q

What is the cartilage that covers the nasopharyngeal opening of the auditory tube?

A

Torus Tubarius

24
Q

What muscle attaches to the torus tubarius?

A

The salpingopharyngeus muscle

25
Q

Where are the pharyngeal tonsils (adenoids) located?

A

In the nasopharynx, Posterior to the salpingopharyngeus muscle within the pharyngeal recess.

26
Q

What are the two holes that lead from the nasal cavity into the oropharynx?

A

Choanae

27
Q

WHat muscle lies directly inferior to the torus tubarius?

A

The legator veli palatini muscle

28
Q

What is the origin of tensor veli palatini?

A

The scaphoid fossa at the base of the pterygoid plate.

29
Q

What nerve innervates the tensor veli palatini

A

V3

30
Q

All of the muscles of the soft palate are innervated by the ______________, except the tensor veli palatini.

A

Vagus nerve.

31
Q

Name the 4 paranasal sinuses.

A

Frontal
Maxillary
Ethmoidal (air cells)
Sphenoid

32
Q

What two bones contribute to the nasal septum?

A

The perpendicular plate of the ethmoid bone, and the vomer. …. some contribution from septal cartilage.

33
Q

The bones of the hard palate form the floor of the ______________. Name them again.

A

Nasal Cavity. Palatine process of the Maxilla and horizontal plate of the palatine bone.

34
Q

What forms the roof of the nasal cavity?

A

The cribiform plate of the palatine bone

35
Q

The superior and middle conchae of the nasal cavity are parts of the __________ bone, and the inferior nasal conchae is its own bone.

A

Ethmoid bone

36
Q

WHat bones contribute to the lateral wall of the nasal cavity?

A 
The Maxilla- frontal process
Lacrimal bone
Ethmoid bone (sup/middle conchae)
Inf Nasal Conchae
Palatine bone- vertical process
Sphenoid bone- medial pterygoid plate
37
Q

THe sphenopalatine foramen is located where and connects what?

A

High on the posterior portion of the lateral nasal wall. It connects the ptyerygopalatine forra and the nasal cavity.

38
Q

What structures run-through the sphenopalatine fossa?

A

The nasopalatine nerve and sphenpalatine artery

39
Q

What recess is located superiorly to the superior nasal concha?

A

The shenoethmoidal recess

40
Q

Where is the bulla ethmoidalis? What else is located there?

A

Beneath the middle nasal concha. The hiatus semilunaris is there too.

41
Q

What sinus is located between the nasal cavity and the orbit?

A

Ethmoidal sinuses (ant, mid, post)

42
Q

The anterior air cells drain into…

A

The hiatus semilunaris

43
Q

The middle air cells drain into the….

A

bulla ethmoidalis

44
Q

The posterior air cells drain into the….

A

superior meatus

45
Q

The maxillary sinus drains where?

A

Through the hiatus semilunaris

46
Q

The sphenoid sinus drains where?

A

Into the sphenoethmoidal recess above the superior nasal concha.

47
Q

The frontal sinus drains where?

A

The hiatus semilunaris

48
Q

The space just inside the nostril is known as the ________.

A

Vestibule. Along with half the other spaces in the body called vestibules….

49
Q

The sphenopalatine foramen is a conduit between which cavities?

A

The nasal cavity and the pterygopalatine fossa.

50
Q

What structure go through the sphenopalatine foramen?

A

Nasopalatine nerve (V2- maxillary) and Sphenopalatine artery (branch of maxillary)

51
Q

What bone is the sphenoethmoidal recess in?

A

Palatine bone and sphenoid bone.

52
Q

What two nerves communicate within the incisive canal>

A

Greater Palatine (runs across superior surface of hard palate/floor of nasal cavity) and the nasopalatine nerve.

53
Q

Describe the course of the olfactory nerve.

A

The branches are on the nasal septum and conchae, and have a very short path through the cribiform plate of the ethmoid bone to the olfactory bulb.

54
Q

What canal extends from the pterygopalatine fossa along the lateral side of the palatine bone, and leads to the greater and lesser palatine foramina?

A

Greater Palatine canal

55
Q

What runs through the greater palatine canal?

A

Greater and lesser palatine nerves

Descending palatine artery (branch of maxillary)

56
Q

What is the main artery supplying the septum and the lateral walls of the nasal cavity?

A

The sphenopalatine artery.

Posterior Septal branches (septum)
Posterior Lateral Nasal Branches (lateral wall of nasal cavity)

57
Q

What artery courses with the nasopalatine nerve to the incisive canal?

A

A branch of the sphenopalatine artery- the posterior septal branch.

Block 6 (8 decks)

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