Nose anatomy

Question 1

what nerve controls nose muscles

Answer 1

Facial nerve- cranial nerve 7

Question 2

what bones make up the lateral wall of the nasal cavity

Answer 2

nasal, maxilla, lacrimal, ethmoid, palatine, med pterygoid plate of spenoid

Question 3

what bones make up the roof

Answer 3

nasal, frontal, ethmoid, sphenoid

Question 4

what are the two divisions of the trigeminal nerve -Cr5

Answer 4

ophthalmic - V1
maxillary- v2

sensory and parasympathetic fibres

Question 5

the anterior superior part of the lateral wall is supplied by which nerve?

Answer 5

V1 ophthalmic

ant ethmoidal nerve

Question 6

what nerve supplies the posterior inferior part of the lateral wall?

Answer 6

V2 maxillary

greater palatine

Question 7

what nerve supplies the post inf part of the medial wall/ septum

Answer 7

V2- nasopalatine nerve

Question 8

what artery accompanies the maxillary nerve

Answer 8

branches of the maxillary branch of the external carotid

Question 9

what arteries accompany the ophthalmic nerve

Answer 9

branches of the ophthalmic branch of the internal carotid artery

Question 10

what nerve passes through the incisive canal in the hard palate

Answer 10

nasopalatine nerve, supplies the anterior palate

Question 11

what is the arterial supply of the ant sup part of the lateral wall

Answer 11

ant post ethmoidal branches of the ophthalmic artery plus the facial artery

Question 12

what is the arterial supply of the post inf part of the lateral wall

Answer 12

greater palatine and sphenopalatine branches of the maxillary artery

Question 13

what does a dehiscent palatine canal lead to

Answer 13

severe epistaxis

Question 14

what artery accompanies the nasopalatine nerve

Answer 14

sphenopalatine artery

Question 15

arterial supply of the septum

Answer 15

septal branches of the maxillary and ophthalmic arteries

Question 16

what ares is predisposed to epistaxis

Answer 16

little’s or kisselbach’s

Question 17

what anastomosis exists in little’s area?

Answer 17

ant ethmoidal
greater palatine
sphenopalatine
labial branches of facial

Question 18

where does the nasal vein enter the nasal cavity

Answer 18

foramen caecum

Question 19

where are nasal veins connected to

Answer 19

cavernous sinus in the cranial cavity

Question 20

where does the maxillary sinus enter

Answer 20

hiatus semilunaris

Question 21

where does the frontal sinus enter

Answer 21

frontonasal duct and infundibulum to hiatus semilunaris

Question 22

where do the posterior ethmoidal cells enter

Answer 22

superior meatus

Question 23

where does the sphenoid sinus enter

Answer 23

sphenoethmoidal recess

Question 24

where does the nasolacimal duct enter

Answer 24

inferior meatus

Question 25

what are the frontal, sphenoid and ethmoid sinuses supplied by

Answer 25

supra orbital and ethmoidal branches of the ophthalmic nerve and ophthalmic artery

Question 26

what is the maxillary sinus supplied by

Answer 26

maxillary nerve and maxillary artery

Question 27

where does nasal cavity lymph drain to?

Answer 27

submandibular nodes
retropharyngeal nodes
upper deep cervical nodes
jugulodigastric node

Question 28

where is the opening of the auditory tube

Answer 28

nasopharynx

Question 29

what is Waldeyer’s ring?

Answer 29

a protective tonsillar ring around the openings of the resp and GI tracts

Question 30

where are the adenoid/ pharyngeal tonsils found?

Answer 30

roof and post wall of the nasopharynx

Question 31

where are the tubal tonsils found

Answer 31

around the opening of the auditory tube

Question 32

what are the frontal, ethmoid and sphenoid sinuses supplied by

Answer 32

supra orbital and ethmoidal branches of the ophthalmic nerve and artery

Question 33

what type of nerves are they

Answer 33

sensory and parasympathetic

Question 34

what does the posterior choanae enter into

Answer 34

the nasopharynx

Question 35

what can lead to middle ear infections

Answer 35

enlargement of the tubal tonsils

Question 36

what can swelling of the pharyngeal tonsil lead to

Answer 36

mouth breathing due to airway obstruction