Lecture 11 & 12: Oral Cavity, Nasal Cavity & Paranasal Sinuses

Question 1

What nerves make up the legs of the “Angel of Nerves”?

Answer 1

Lingual with chorda tympani running along it

Inferior alveolar that splits off to mylohyoid n

Question 2

What nerves make up the arms of the “angel of nerves”?

Answer 2

Long buccal nerve

Auriculotemporal

Question 3

What makes up the halo of the “angel of nerves”

Answer 3

Foramen ovale

Question 4

What artery does the auriculotemporal nerve wrap around?

Answer 4

Middle meningeal artery

Question 5

What structures are innervated by long buccal nerve, V3?

Answer 5

SKin and mucosa of cheek and

Question 6

What nerve spirals around the submandibular duct?

Answer 6

Lingual nerve

Question 7

What artery supples blood to the sublingual gland?

Answer 7

Sublingual branch of lingual artery

Question 8

What cranial nerves supply GSA fibers to the anterior 2/3 of the tongue? How about SVA fibers?

Answer 8

GSA = CN V
SVA = VII

Question 9

What cranial nerves supply GVA and SVA fibers to the posterior 1/3 of the tongue?

Answer 9

Glossopharyngeal nerve

Question 10

What does unilateral paralysis of the tongue result in?

Answer 10

Atropy, fasciculations, and deviation of the protruded tongue toward the affected side

Question 11

What arteries supply blood to the tongue?

Answer 11

Lingual and profunda lingual arteries

Question 12

What LNs are responsible for lymph drainage of the nose?

Answer 12

Deep cervical LNs -> jugulo-digastric and jugulo-omohyoid

Question 13

What muscles elevate versus tense the soft palate?

Answer 13

Levator veli palatini = elevation

Tensor veli palatini = tense

Question 14

**What does unilateral paralysis of the tensor or levator veli palatini muscles result in?

Answer 14

Deviation of the uvula toward the normal side

**Need to know this!

Question 15

WHat structures make up the bony portion of the external nose?

Answer 15

Nasal, maxillae and frontal bones

Question 16

What structures make up the cartilaginous portions of the external nose?

Answer 16

Septal and alar cartilages

Question 17

What structures make up the nasal septum?

Answer 17

Septal cartilage
Perpendicular plate of the ethmoid bone
Vomer

Question 18

Fractures of the nose frequently occur where?

Answer 18

At the junction between the septal cartilage and the ethmoid and vomer

Question 19

THe posterior 2/3 of the nasal cavity is supplied by branches of the _________________ artery, whereas the anterior 1/3 is supplied by the ________________ artery

Answer 19

Sphenopalatine (splits into posterior septal artery and posterior lateral nasal artery)

Anterior ethmoidal artery

Question 20

What nerves innervate the anterior 1/3 of the nasal cavity versus the posterior 2/3?

Answer 20

Anterior 1/3 = anterior ethmoid nerve

Posterior 2/3 = branches of the sphenopalatine ganglion

Question 21

What 4 structures comprise the “Z scheme” for innervation of the nasal cavity?

Answer 21

Top of Z = lacrimal n (V1) -> lacrimal gland
Diagonal part of Z = zygomativ bone
BOttom of Z = maxillary n (V2) -> infraorbital

Question 22

**WHat forms the flood of the orbit?

Answer 22

Maxillary sinus

**need to know this

Question 23

What structures are found posterior to the sphenoid sinus?

Answer 23

Pons and basilar artery

Question 24

**What structures are found superior to the sphenoid sinus?

Answer 24

Pituitary

**Need to know this!

Question 25

What structures are found anterior to the sphenoid sinus?

Answer 25

Nasal cavity

Question 26

What structures are found inferior to the sphenoid sinus?

Answer 26

Nasopharynx

Question 27

**What structures are found lateral to the sphenoid sinus?

Answer 27

INternal carotid
V1
Cavernous sinus

**Need to know this!