tongue

Question 1

what are the 4 functions of the tongue?

Answer 1

taste
mastication
swallowing
speech

Question 2

what are the 5 parts of the tongue?

Answer 2

apex- against incisor teeth
margin- rests against teeth and gums
dorsum- upper
inferior surface- lower
root -base

Question 3

the sulcus terminalis is a V shaped groove that divides the tongue into?

Answer 3

oral part- anterior 2/3

oropharyngeal part- post 1/3

Question 4

what is the foramen located at the apex of the V of the sulcus terminalis?

Answer 4

foramen cecum

Question 5

what is the median groove?

Answer 5

shallow groove visible on the surface of the tongue

Question 6

what are the 4 lingual papillae?

Answer 6

filiform
fungiform
vallate
foliate

Question 7

which of the papillae are the largest and contain taste buds?

Answer 7

vallate papillae- V shaped row in front of sulcus terminalis

Question 8

which papillae are grooves and ridges along the margin of the tongue and contain taste buds?

Answer 8

foliate- poorly developed in humans

Question 9

what is a mass of lymphoid tissue found on the oropharyngeal surface of the tongue?

Answer 9

lingual tonsil

Question 10

what are the 2 folds that connect the tongue to the epiglottis?

Answer 10

median and lateral glossoepiglottic fold

Question 11

what is the space on either side of the median glossoepiglottic fold?

Answer 11

vallecula

Question 12

ankyloglossia is a condition of the tongue also known as?

Answer 12

tongue tied- has to do with the frenulum being the incorrect length

Question 13

all of the extrinsic muscle of the tongue are innervated by the hypoglossal nerve except?

Answer 13

palatoglossus- vagus nerve CN X via pharyngeal plexus

Question 14

what is the origin and insertion of the palatoglossus muscle?

Answer 14

O: soft palate
I: sides of tongue

Question 15

what is the function of the palatoglossus muscle?

Answer 15

elevate back of tongue

Question 16

the genioglossus prevents the tongue from falling back and blocking the airway leading to suffocation. This is important during?

Answer 16

general anesthesia

seizure disorders

Question 17

the general sensation of the anterior 2/3 of the tongue?

Answer 17

lingual nerve-branch of mandibular division of trigeminal

Question 18

where do we get taste receptors on the anterior 2/3 of tongue?

Answer 18

chorda tympani, branch of facial nerve CN VII

Question 19

both general sensation and taste of posterior 1/3 of tongue come from?

Answer 19

glossopharyngeal nerve CN IX

Question 20

what is the blood supply to the tongue?

Answer 20

lingual artery and vein

Question 21

what are the lymph nodes of the tongue?

Answer 21

submental, submandibular and deep cervical nodes