Throat anatomy and physiology

Question 1

3 parts of the pharynx and corresponding cavities

Answer 1

nasal cavity - nasopharynx
oral cavity - oropharynx
larynx - hypopharynx

Question 2

Superior and inferior labial frenulum

Answer 2

lips to gums

Question 3

Lingual frenulum

Answer 3

tongue to floor of mouth

Question 4

2 arches near uvula

Answer 4

glossopalatine - anterior

pharynopalatine - posterior

Question 5

2 parts of oral cavity

Answer 5

oral vestibule - between lips and teeth

proper oral cavity

Question 6

Boundaries of oral cavity

Answer 6

lips to palatoglossal arch
palate to floor of mouth/tongue
buccal mucosa

Question 7

3 salivary glands - duct position

Answer 7

sublingual
submandibular - superior to digastric muscle
parotid - pierces buccinators and enters oral cavity opposite upper 2nd maxillary molar

Question 8

Submandibular gland - deep and superficial lobes separated by what?

Answer 8

mylohyoid muscle

Question 9

Lingual nerve - branch of what nerve?

Answer 9

Cranial nerve V3 from trigeminal nerve

Question 10

Lingual nerve innervation

Answer 10

anterior 2/3 tongue - sensory

Question 11

What fibres run with the lingual nerve and what are the role of these to the tongue?

Answer 11

facial nerve fibres via chorda tympani

taste from anterior 2/3 tongue

Question 12

Functions of oral cavity and parts associated with these

Answer 12

taste
mastication - teeth, tongue 
speech - tongue, cheek, lips
digestion - salivary enzymes 
swallowing - tongue, hard and soft palette

Question 13

2 parts of tongue

Answer 13

anterior 2/3 and posterior 1/3

Question 14

anterior 2/3 tongue - which branchial arch? nerves?

Answer 14

1st
sensation by lingual nerve
taste by chorda tympani

Question 15

posterior 1/3 tongue - which branchial arch? nerves?

Answer 15

3rd

Cranial nerve 9 - glossopharyngeal

Question 16

3 types of papillae in tongue - which has no taste buds?

Answer 16

filiform - no taste buds

fungiform and foliate

Question 17

Intrinsic and extrinsic muscles of the tongue function

Answer 17

intrinsic - alter shape

extrinsic - alter position

Question 18

What nerve supplies all of the tongue? exception?

Answer 18

hypoglossal nerve

palatoglossus - pharyngeal plexus

Question 19

Pharyngeal plexus?

Answer 19

Cranial nerve 9 and 10

Question 20

4 muscles of mastication and innervation

Answer 20

masseter 
lateral pterygoid 
medial pterygoid 
temporalis 
facial nerve - Cr n V3

Question 21

Epithelium of nasopharynx

Answer 21

stratified, non keratinised squamous

Question 22

Nerve supply of nasopharynx

Answer 22

pharyngeal plexus

Question 23

Hypopharynx - arterial and nerve supply

Answer 23

superior thyroid, ascending pharyngeal, lingual

pharyngeal plexus

Question 24

3 parts of hypopharynx

Answer 24

pyriform sinus
posterior pharyngeal wall
post cricoid area

Question 25

Functions of larynx

Answer 25

respiratory tract, voice, swallowing

Question 26

3 parts of larynx

Answer 26

supraglottis, glottis and subglottic

Question 27

Extrinsic and intrinsic muscles of larynx

Answer 27

extrinsic - move whole larynx

intrinsic - move vocal cords

Question 28

Motor innervation of larynx

Answer 28

recurrent laryngeal

Question 29

Sensory innervation of larynx

Answer 29

supraglottis = internal laryngeal

other 2 = recurrent laryngeal