Midline Cavities

Question 1

what is tongue innervated by

Answer 1

CN XII (motor)
CN V3/CN IX (sensory)
CN VII/CN IX (taste)

Question 2

genioglossus nerve innervation

Answer 2

CN XII

Question 3

styloglossus nerve innervation

Answer 3

CN XII

Question 4

genioglossus funciton

Answer 4

Protrudes tongue, depresses tongue, elevates sides of tongue

Question 5

what happens if genioglossus is injured

Answer 5

In injury tongue points to affected side

Question 6

styloglossus function

Answer 6

Retracts tongue, elevates sides of tongue

Question 7

palatoglossus nerve function

Answer 7

CN X

Question 8

palatoglossus function

Answer 8

Elevates tongue, constricts posterior opening of oral cavity

Question 9

palatopharyngeus innervation

Answer 9

CN X

Question 10

palatopharyngeus function

Answer 10

Elevates pharynx/larynx during swallowing/speaking

Question 11

levator veli palatani innervation

Answer 11

CN X

Question 12

levator veli palatini function

Answer 12

Elevates soft palate during swallowing

Question 13

tensor veli palatini innervation

Answer 13

CN V3

Question 14

function of tensor veli palatini

Answer 14

Tenses soft palate during swallowing

Question 15

salpingopharyngeus innervation

Answer 15

CN X

Question 16

salpingopharyngeus function

Answer 16

Elevates pharynx/larynx during swallowing/speaking

Question 17

pharyngeal constrictor innervation

Answer 17

CN X- surround pharynx like basket

Question 18

role of pharyngeal constrictors

Answer 18

Constricts pharynx to assist in moving bolus inferiorly to esophagus during swallowing

Question 19

intrinsic muscles of larynx innervation

Answer 19

Inferior laryngeal nerve

Question 20

role of intrinsic muscles of larynx

Answer 20

Moves cartilages of larynx to change position and tension of vocal folds to produce speech

Question 21

what is soft palate innervated by

Answer 21

Muscular palate that elevates to seal off the nasal cavity when swallowing (CN IX sensory, CN V3/CN X motor)

Question 22

what is uvula innervated by

Answer 22

Highly sensory part of soft palate-triggers gag reflex (CN IX sensory, CN X motor)

Question 23

sublingual gland innervation/blood supply

Answer 23

Blood: Lingual artery

Innervation: CN V3 (sensory), Chorda tympani from CN VII via lingual nerve (parasympathetic motor)

Question 24

where does palatine nerve come from

Answer 24

CN V2- sensory

Question 25

where does palatine nerve innervate

Answer 25

Sensation in posterior nasal cavity, roof of mouth

Question 26

what does inferior alveolar nerve innervate

Answer 26

Provides sensory innervation to mandible and lower teeth