Oral Cavity, tongue and pharynx

Question 1

Oral cavity - boundaries

Answer 1

• roof = hard and soft palates
• floor = mainly soft tissues, including tongue
• lateral walls = cheeks
• anterior = oral fissure
• posterior = oropharynx

Question 2

what is the oral vestibule?

Answer 2

space between the lips/cheeks and dental arches

Question 3

Labial frenulum purpose

Answer 3

connects gingiva to the lips in the midline

Question 4

Types of paipillae found on tongue

Answer 4

• fungiform
• foliate
• vallate
• filiform

Question 5

which tongue papillae does not have tastebuds?

Answer 5

filliform

Question 6

largest papillae, found anterior to terminal sulcus

Answer 6

Vallate

Question 7

What separates the anterior 2/3rds to the posterior 3rd of the tongue?

Answer 7

the terminal sulcus

Question 8

intrinsic muscles of the tongue - function

Answer 8

change shape and size of tongue

Question 9

What are the intrinsic muscles of the tongue?

Answer 9

superior longitudinal
vertical
transverse
inferior longitudinal

Question 10

The extrinsic muscles originate from outside of the tongue? what are their functions?

Answer 10

protruding, retracting, elevation and depression of the tongue

Question 11

what are the extrinsic muscles of the tongue?

Answer 11

palatoglossus
styloglossus
hyoglossus
genioglossus

Question 12

Genioglossus location

Answer 12

• superior to geniohyoid muscles
• originates from superior mental spine of mandible

Question 13

Genioglossus function

Answer 13

protruding the tongue

Question 14

Hyoglossus location

Answer 14

• lateral to genioglossus
• originates from grater horn of hyoid bone

Question 15

Hyoglossus function

Answer 15

depressing the sides of the tongue

Question 16

Where does the lingual artery enter the tongue?

Answer 16

between the hyoglossus and genioglossus

Question 17

styloglossus origin

Answer 17

styloid process of temporal bone

Question 18

styloglossus function

Answer 18

elevating and retracting tongue

Question 19

Palatoglossus origin

Answer 19

the palatine aponeurosis

Question 20

tongue muscles motor innervation (not inc palatoglossus)

Answer 20

hypoglossal nerve

Question 21

palatoglossus motor innervation

Answer 21

vagus nerve

Question 22

general sensation anterior 2/3

Answer 22

mandibular nerve (CNV3)

Question 23

general sensation posterior 1/3 tongue

Answer 23

Glossopharyngeal (CNIX)

Question 24

special sensation anterior 2/3 tongue

Answer 24

facial nerve via Chorda tympani

Question 25

posterior 1/3 tongue special sensation

Answer 25

glossopharyngeal nerve

Question 26

blood supply of tongue

Answer 26

• lingual artery
• deep lingual and dorsal veins drain into IJV

Question 27

Hard palate is formed by

Answer 27

anterior 3/4 = palatine process of maxilla
posterior 1/4 = horizontal process of palatine bones

Question 28

Hard palate palate blood supply

Answer 28

greater palatine artery

Question 29

soft palate blood supply

Answer 29

lesser palatine artery

Question 30

Pharyngeal constrictors = function

Answer 30

pushing food bolus towards oesophagus

Question 31

pharyngeal elevators - function

Answer 31

lifts pharynx to receive food bolus from oral cavity

Question 32

What are the pharyngeal constrictors?

Answer 32

superior
middle
inferior

Question 33

Pharyngeal constrictors = nerve supply

Answer 33

vagus nerve via pharyngeal plexus

Question 34

Palatopharyngeus function

Answer 34

elevates pharynx and larynx
draws softs palate downwards

Question 35

palatopharyngeus nerve supply

Answer 35

vagus

Question 36

stylopharyngeus function

Answer 36

elevates pharynx and larynx

Question 37

stylopharyngeus nerve supply

Answer 37

glossopharyngeal nerve

Question 38

salpingopharyngeus originates from…

Answer 38

the auditory tube (pharyngotympanic tube)

Question 39

salpingopharyngeus function

Answer 39

elevates pharynx and larynx
helps open the auditory tube during swallowing for pressure equalisation in the middle ear

Question 40

Salpingopharyngeus nerve supply

Answer 40

vagus