Anatomy Spots

Question 1

where does the chorda tympani cross over?

Answer 1

internal aspect of the tympanic membrane

Question 2

what is the sensory nerve supply to the inferior part of the external acoustic meatus?

Answer 2

vagus

Question 3

what nerves supply the tympanic membrane?

Answer 3

outer surface = mainly V3 (with some contribution from vagus)
inner surface = glossopharyngeal

Question 4

what nerve supplies sensory info to mucosa of nasal cavity?

Answer 4

V3

Question 5

what 4 structures pass through the jugular foramen?

Answer 5

left CN IX
left CN X
Left CN XI
internal jugular vein

Question 6

what nerve supply sensory info to the tragus of the pinna?

Answer 6

anterior rami of C2 and C3 spinal nerves

- also supply ear lobe

Question 7

what protective function does the zygomatic process have?

Answer 7

prevents anterior dislocation of the TMJ

Question 8

where is the hypoglossal canal found?

Answer 8

occipital bone

Question 9

what travels through the facial canal?

Answer 9

fibres of facial nerve transmitting taste from anterior 2/3rds of tongue

Question 10

where does the squamous part of the temporal bone articulate with the frontal, sphenoid and parietal bones?

Answer 10

pterion (H shaped join)

Question 11

where is the otic capsule found?

Answer 11

petrous part of temporal bone

Question 12

where does the sphenoid sinus drain into?

Answer 12

sphenoethmoidal recess (above superior concha)

Question 13

what is the sensory supply to the palatine tonsil?

Answer 13

CN IX (glossopharyngeal)

Question 14

how is the facial nerve unique?

Answer 14

mixed function

- 4 axon modalities

Question 15

how may the facial nerve be damaged and give 2 possible effects of this

Answer 15

can be damaged during salivary gland or internal/middle ear surgery
can present with dry eye surface and taste dysfunction

Question 16

what kind of mucosa covers the nostril and hard palate?

Answer 16

keratinised (mainly)

Question 17

where is Kiesselbach’s area found?

Answer 17

septum

Question 18

what is the crista galli?

Answer 18

bony projection from the top of the cribiform plate of the ethmoid bone
forms part of the roof of the nasal cavity

Question 19

where is the middle concha found?

Answer 19

feature of ethmoid bone

Question 20

sensory nerve supply to the eustachian tube?

Answer 20

CN IX

Question 21

where is the opening of the internal acoustic meatus found?

Answer 21

posterior cranial fossa

Question 22

the opening if the eustachian tube is closely related to what structure in the nasopharynx?

Answer 22

adenoids (pharyngeal tonsils)

Question 23

the opening of the nasolacrimal duct is most likely to be damaged in what kind of fracture?

Answer 23

le fort 1

Question 24

where is the arytenoid muscle found?

Answer 24

in pre-tracheal deep cervical fascia below level of C3

Question 25

what nerve innervates the arytenoid muscle?

Answer 25

CN X

Question 26

what is the function of the arytenoid muscle?

Answer 26

not involved in whispering sphincteric function - quiet/loud speech

Question 27

what nerve innervates the tonsillar sinus?

Answer 27

CN IX

Question 28

what part of the cricoid cartilage is compressed against the osesophagus during an emergency to prevent aspiration?

Answer 28

cricoid lamina

Question 29

what is the function of the cricoid arch?

Answer 29

landmark in cricothyrotomy

Question 30

at what vertebral level is the thyroid cartilage found?

Answer 30

C5

Question 31

which cervical vertebrae is palpable?

Answer 31

C7

Question 32

where does the oesophagus begin?

Answer 32

C6

Question 33

where is a laryngoscope inserted?

Answer 33

vallecula | - depression behind the root of the tongue

Question 34

what 3 structures are found deep to the mucosa in the throat?

Answer 34

eustachian tube tubal tonsil salpingopharyngeus

Question 35

characteristic feature of soft palate, hard palate and laryngopharynx?

Answer 35

soft palate = arches hard palate = bilateral ruggae laryngopharynx = bilateral fossa

Question 36

what nerve passes through the foramen ovale?

Answer 36

CN V3

Question 37

lymph from the tip of the tongue drains to which lymph nodes?

Answer 37

submental

Question 38

sensory nerve supply to the epiglottis?

Answer 38

superior laryngeal

Question 39

which group of muscles looks like a Scotland flag (cross)?

Answer 39

arytenoid muscle

Question 40

what is the function of the palatopharyngeus muscle?

Answer 40

protects lower resp tract during swallowing | contracts in nasal speech

Question 41

what nerve supplies the palatopharyngeus muscle?

Answer 41

CN X

Question 42

what muscle/nerve is tested by sticking out the tongue?

Answer 42

genioglossus | CN XII

Question 43

what muscle/nerves are being testes when patient says (ahhh)?

Answer 43

levator veli palatine | CN X and CN V3

Question 44

what nerve innervates the stylopharyngeus muscle?

Answer 44

CN IX

Question 45

what muscle does the parotid duct pierce through?

Answer 45

buccinator

Question 46

from which pharyngeal arch is tensor veli palatine derived from?

Answer 46

1