Nasal Cavity & Nasopharynx

Question 1

3 areas of cartilage of the nose are?

Answer 1

1. lateral cartilage
2. septal cartilage
3. alar cartilages

Question 2

bridge of the nose is made of?

Answer 2

nasal bones

Question 3

what allows air to move between nostrils?

Answer 3

posterior nare, rest is blocked by septal cartilage

Question 4

medial wall of the nasal cavity is made from 3 major structures:

Answer 4

1. septal cartilage
2. cribiform plate of ethmoid
3. vomer

Question 5

3 consequences of severe nose breaks:

Answer 5

Ethmoid bone involvment

1. infection
2. bleeds into brain
3. rhinorrhea: CSF into nasal cavity

Question 6

medial wall covered by what? why?

Answer 6

highly vascular mucous membrane for warming/humidifying

Question 7

describe the vestibule of nostril

Answer 7

not mucosa or highly vascularized

skin and hair

Question 8

histologically, what kind of cells are the nasal cavity made of?

Answer 8

ciliated pseudostratified columnar epithelial cells

Question 9

lateral wall of nasal cavity features?

Answer 9

superior concha
middle concha
inferior concha

Question 10

what do the concha do in the nose?

Answer 10

create turbulence for inhaled air to warm and humidify

Question 11

name the 3 meatus in the nasal cavity, that do they do?

Answer 11

superior
middle
inferior meatus
communicate with sinuses

Question 12

which sinuses innervated by V1?

Answer 12

ethmoid
frontal
sphenoid

Question 13

which sinuses innervated by V2?

Answer 13

maxillary sinus

Question 14

why is infection more likely in maxillary sinuses?

Answer 14

drainage is superior rather than inferior like the other sinuses inferior

Question 15

what can you get with sinusitis?

Answer 15

referred pain to cutaneous nerves

Question 16

tears drain how?

Answer 16

through nasolacrimal duct out the orifice in the inferior meatus of nasal cavity

Question 17

nasal cavity blood supply: posterior lateral and medial walls

Answer 17

sphenopalatine artery

Question 18

nasal cavity blood supply: anterior lateral and medial walls

Answer 18

lateral nasal branches of facial artery

superior labial arteries

Question 19

nasal cavity blood supply: inferior lateral and medial walls

Answer 19

greater palatine artery

Question 20

nasal cavity blood supply: superior lateral and medial walls

Answer 20

anterior and posterior ethmoidal arteries

Question 21

which nasal cavity artery bleed profusely if damaged? why?

Answer 21

sphenopalatine artery because branch of external carotid

Question 22

nerve supply to nasal cavity:

Answer 22

superior: V1, nasociliary
inferior: V2, greater/lesser palatine nerves

Question 23

what ganglion is in the nasal cavity?

Answer 23

pterygopalatine ganglion

Question 24

PHarynx starts and ends where?

Answer 24

starts base of skull

ends at C6 cricoid cartilage

Question 25

3 parts of the pharynx are?

Answer 25

Nasopharynx
Oropharynx
Laryngopharynx

Question 26

what are the 3 constrictor muscles of the pharynx? purpose?

Answer 26

3 slings that attach via median raphe to help with swallowing

1. superior constrictor muscle
2. middle constrictor muscle
3. inferior constrictor muscle

Question 27

what muscle to equalize pressure in auditory tube?

Answer 27

salpingopharyngeal muscle

Question 28

what can swell and block nasopharynx?

Answer 28

pharyngeal tonsil/adenoids