TongueMuscles

Question 1

Motor Innervation of Tongue (as a whole)

Answer 1

CN XII - Hypoglossal

Question 2

Sensory Innervation of Tongue (as a whole)

Answer 2

CN V3 and CN IX glossopharyngeal

Question 3

Taste Innervation of Tongue (as a whole)

Answer 3

CN VII - Facial and CN IX - Glossopharyngeal

Question 4

Function of Tongue

Answer 4

Manipulates food bolus during chewing/swallowing, functions in speech

Question 5

4 muscles that insert onto the Tongue

Answer 5

Genioglossus
Styloglossus
Hyoglossus
Palatoglossus

Question 6

Genioglossus Innervation

Answer 6

CN XII - Hypoglossal

Question 7

Genioglossus Fxn

Answer 7

Protrudes tongue, depresses tongue, elevates sides of tongue

Question 8

Injury to genioglossus presents as?

Answer 8

Tongue points/leans to the affected side

Question 9

Styloglossus Innervation

Answer 9

CN XII - Hypoglossal

Question 10

Styloglossus Fxn

Answer 10

Retracts tongue, elevates sides of tongue

Question 11

Hyoglossus Innervation

Answer 11

CN XII - Hypoglossal

Question 12

Hyoglossus Fxn

Answer 12

Depresses Tongue

Question 13

Palatoglossus Innervation

Answer 13

CN X - VAGUS

Question 14

Palatoglossus Fxn

Answer 14

Elevates tongue, constricts posterior opening of the oral cavity

Question 15

Rule 1 of “Stern’s Rule”

Answer 15

Muscles called “Tensor” are CN V3

Question 16

Rule 2 of “Stern’s Rules”

Answer 16

Muscles called “palat” are CN X unless also called “tensor”

Question 17

Rule 3 of “Stern’s Rules”

Answer 17

Muscles called “glossus” are CN XII unless also called “palat” or also called “tensor”

Question 18

Geniohyoid Innervation

Answer 18

C1 ventral ramus via CN XII - hypoglossal

Question 19

Geniohyoid Fxn

Answer 19

Pulls hyoid anteriorly, shortens floor of mouth, widens pharynx

Question 20

Posterior Belly of Digastric Innervation

Answer 20

CN VII - Facial Nerve

Question 21

Anterior Belly of Digastric Innervation

Answer 21

Inferior Alveolar Nerve (branch of CN V3)

Question 22

Digastric Fxn

Answer 22

Elevates hyoid during swallowing/speaking, can also depress mandible

Question 23

Mylohyoid Innervation

Answer 23

Inferior Alveolar Nerve (branch of CN V3)

Question 24

Palatopharyngeus Innervation

Answer 24

CN X - Vagus (palat-)

Question 25

Mylohyoid Fxn

Answer 25

Elevates hyoid, tongue, floor of mouth during swallowing/speech

Question 26

Palatopharyngeus Fxn

Answer 26

Elevates pharynx/larynx during swallowing/speaking

Question 27

Levator veli palatini Innervation

Answer 27

CN X - Vagus (palat-)

Question 28

Levator veli palatini Fxn

Answer 28

Elevates soft palate during swallowing

Question 29

Tensor veli palatini Innervation

Answer 29

CN V3 - (tensor-)

Question 30

Tensor veli palatini Fxn

Answer 30

Tenses soft palate during swallowing

Question 31

Salpingopharyngeus innervation

Answer 31

CN X - Vagus

Question 32

Salpingopharyngeus Fxn

Answer 32

Elevates pharynx/larynx during swallowing/speaking

Question 33

Pharyngeal constrictors Innervation

Answer 33

CN X - Vagus

Question 34

Pharyngeal constrictors Fxn

Answer 34

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

Question 35

Cricothyroid Innervation

Answer 35

Superior Laryngeal Nerve

Question 36

Cricothyroid Fxn

Answer 36

Increases tension in vocal folds (higher pitch)

Question 37

Intrinsic muscles of larynx Innervation

Answer 37

Inferior Laryngeal Nerve

Question 38

Intrinsic muscles of larynx Fxn

Answer 38

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