11/12 Anatomy of the Nasal Cavity

Question 1

The major structures of the superior middle and inferior _________ Nasal Cavity and Nasopharynx

Answer 1

Question 2

The bones that come out from the sides of the nasal cavity to form the concha.

Answer 2

Turbinate Bones

Question 3

The spaces below each concha

Answer 3

The superior middle and inferior meatus

Question 4

What purpose does the Superior, middle, and inferior meatus each serve?

Answer 4

They serve to condition the air by humidify, warm, and swirl around.

Question 5

What is the nerve that does general sensation to the Nasal cavity?

Answer 5

Maxillary branch of the trigeminal nerve (V-2)

Gives pain Temp touch etc.

Question 6

Describe the course of the Maxillary branch of the trigeminal nerve in the nasal cavity

Answer 6

V-2 sends branches to the nasal septem, lateral nasal wall and the hard palate and the lingual surface of the gums.

Question 7

Describe the nasal cavity from the nostril back to the nasopharynx (with the concha still in place.

Answer 7

Question 8

What’s located under the middle concha, in the middle meatus?

Answer 8

From the anterior to the posterior: Infundibulum opeing of frontonasal duct taht drains the frontal sinus and anterior ethmoid cells; the Opening of the middle ethmoidal cells onto bulla ehmoidalis; and the opening of maxillary sinus in floow of pheno-ehmoidal recess. then in the back is the hiatus semilunar!

in summary: Frontonasal duct (frontal sinus/anter. ethmoid); bulla ethmoidalis (middle ethmoid); Spheno-ethmoidal recess ( maxillary sinus); hiatus semilunar!

Question 9

What if I cut away the superior concha bone and explored the surperior meatus…

Answer 9

Find the opeing to posterior ethmoidal clls into the lateral wall of superior meatus.

Question 10

What if I explored just above the superior concha of the nasal cavity, what opening could I find?

Answer 10

the Opening of shenoidal sinus into sheno-ethmoidal recess

Question 11

What if a horrible nasal bacteria decided to grow in the inferior nasal meatus, what duct could it infect?

Answer 11

the nasolacrimal duct!

Question 12

what If i lost the greater petrosal branch due to a horrible case of shingles…or somethin…

Answer 12

wouldn’t be able to cry!!!! because the lacrimal gland is innervated by the greater petrosal. Also wouldn’t be able to close your eye against resistance etc.

Question 13

An infection of the lacrimal gland may also infect what nearby structure?

Answer 13

the nasal cavity….because the tears drain into the lacrimal canaliculi, then the lacrimal sac, and into the nasolacrimal duct in the inferior nasal meatus

Question 14

The road of a tear….into the nose

Answer 14

Inf. Sup. Puncta; Lacrimal canaliculi, lacrimal sac; nasolacrimal duct; inferior meatus, upper lip, mouth etc! heheh

Question 15

what is a paranasal sinus?

Answer 15

Hollow chambers named for the bones in which they reside.

Question 16

The sinuses of the face…

Answer 16

Frontal sinus;

Ethmoid sinus (air cells)

Maxillary sinus

sphenoid sinus

Question 17

There seems to be an infection just above my eye…which sinus could it be?

Answer 17

The Frontal Sinus…paired set just above the eyebrows

Question 18

an infection has traveled from teh middle meatus into some honey comb looking sinuses…where is the infection?

Answer 18

The ethmoid sinus or air cells, either the ant. middle. or post.

Question 19

Now that pesty sinus infection has traveled directly below the eyes…which sinus set is it in?

Answer 19

the Maxillaary sinus…paired set of two just below the eyes.

Question 20

The sinus infection has traveled up above the sup. concha of the nasal cavity and invaded a sinus post. the nasal cavity…where is it?

Answer 20

In the sphenoid sinus!

Question 21

That nasal infection is causing a lot of pain and I’m ready to knock out the nerves that innervate it…what nerves to I target

Answer 21

The trigeminal nerve that is providing GS to the sinuses and specifically V-1 and V-2

Question 22

My attending just hit me with a zinger….name this tube opening behind the nasal cavity at the top of the nasopharynx….with three different names!

Answer 22

The opening of:

the pharyngotympanic tube

Auditory tube

Eustacian tube

bamm!

Question 23

I had a killer sore throat and now my ears and the spot behind my ears is very tender…where has the infection traveled?

Answer 23

Up the pharyngotympanic tube, into the middle ear, into the mastoid antrium and into the mastoid cells.

Question 24

The three important structures of the oral cavity…as per Dr. M

Answer 24

Palate

Tongue

Teeth

Question 25

the muscle that courses form the palate to the tounge

Answer 25

the palatoglossal muscle

Question 26

the structure that is off-center away from the leasion if there is a problem with cranial nerve 10

Answer 26

The palatoglossal arch in the back of the oral cavity (and the ovula that is attached to it)

Question 27

the muscle from the palate to the pharnx…behind the palatoglossal m.

Answer 27

The palatopharyngeal muscle that makes the palatopharyngeal arch.

Question 28

located between the two arches at the back of the oral cavity

Answer 28

Palatine tonsil is located between the palatoglossal and palatopharyngeal arch

Question 29

I just got a hunk of musaca caught in my (back of the oral cavity) what nerve is telling me about it?

Answer 29

the greater and lesser palatine nerves (CN V-2) provide innervation to the hard and soft palate, lingual surface of gums!

Question 30

CN V-2 comes out of the trigeminal ganglion and chugga-choos where?

What kind of train is it?

Answer 30

Through the Foramen rotundum, and then branches

a branch goes strait anterior to pop out as the infraorbital nerve to innervate the skin below the eye and side of nose, and top of teeth root.

A part dives down to form the greater and lesser palatine nerves to innervate the hard and soft palate

It is a general sensory train headed form the teeth and skin back to the trigeminal nerve

Question 31

The muscle that lifts the palate:

Answer 31

the Levator veli palatinin muscle!

Question 32

The motor innervation to the muscle that lifts the palate

Answer 32

the levator veli palatini muscle is innervated by CN X

Question 33

The muscle and cranial nerve that tenses the palate

Answer 33

Cranial nerve 3 and the Tensor veli palatini muscle (CN X)

Question 34

The sensory to the anterior 2/3 of the tounge

Answer 34

SS - CN VII via the lingual then via the corda tympani back to the

GS CN V-3

Question 35

The sensation to the post. 1/3 of tounge

Answer 35

GS- CN IX

SS - CN IX

Question 36

The muscle that moves the tounge

Answer 36

the Genioglossus muscle

Question 37

The nerve track of the muscle of the toung

Answer 37

CN XII From the medulla, out he hypoglossal canal, through the submandibular triangle and innervates all of the tounge muscles

Question 38

Types of teeth

Answer 38

Molars: yellow; Premolars: orange; Canines: blue; Incisors: green.

Question 39

Teeth for grinding

Answer 39

Molars

Question 40

The sensory innervation of the teeth

Answer 40

Maxillary teeth by V-2:

Anterior superior aviolar nerve

Middle superior aviolar nerve

and posterior aviolar nerve.

for the front middle and rear teeth.

Question 41

The sensory innervation to the bottom teeth

Answer 41

the Mandibular teeth innervated by CN V-3

Inferior Alveolar nerve that courses down thorugh the mandible and exits as the mental nerve!